20449771920

素因数分解:

$2^4\times 3^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61879}}^1$

素因数の和:61924

約数の個数: 240

約数和(自身を含む): 75411423360

約数和(自身を除く): 54961651440

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 27, 30, 34, 36, 40, 45, 48, 51, 54, 60, 68, 72, 80, 81, 85, 90, 102, 108, 120, 135, 136, 144, 153, 162, 170, 180, 204, 216, 240, 243, 255, 270, 272, 306, 324, 340, 360, 405, 408, 432, 459, 486, 510, 540, 612, 648, 680, 720, 765, 810, 816, 918, 972, 1020, 1080, 1215, 1224, 1296, 1360, 1377, 1530, 1620, 1836, 1944, 2040, 2160, 2295, 2430, 2448, 2754, 3060, 3240, 3672, 3888, 4080, 4131, 4590, 4860, 5508, 6120, 6480, 6885, 7344, 8262, 9180, 9720, 11016, 12240, 13770, 16524, 18360, 19440, 20655, 22032, 27540, 33048, 36720, 41310, 55080, 61879, 66096, 82620, 110160, 123758, 165240, 185637, 247516, 309395, 330480, 371274, 495032, 556911, 618790, 742548, 928185, 990064, 1051943, 1113822, 1237580, 1485096, 1670733, 1856370, 2103886, 2227644, 2475160, 2784555, 2970192, 3155829, 3341466, 3712740, 4207772, 4455288, 4950320, 5012199, 5259715, 5569110, 6311658, 6682932, 7425480, 8353665, 8415544, 8910576, 9467487, 10024398, 10519430, 11138220, 12623316, 13365864, 14850960, 15036597, 15779145, 16707330, 16831088, 18934974, 20048796, 21038860, 22276440, 25060995, 25246632, 26731728, 28402461, 30073194, 31558290, 33414660, 37869948, 40097592, 42077720, 44552880, 47337435, 50121990, 50493264, 56804922, 60146388, 63116580, 66829320, 75182985, 75739896, 80195184, 84155440, 85207383, 94674870, 100243980, 113609844, 120292776, 126233160, 133658640, 142012305, 150365970, 151479792, 170414766, 189349740, 200487960, 227219688, 240585552, 252466320, 255622149, 284024610, 300731940, 340829532, 378699480, 400975920, 426036915, 454439376, 511244298, 568049220, 601463880, 681659064, 757398960, 852073830, 1022488596, 1136098440, 1202927760, 1278110745, 1363318128, 1704147660, 2044977192, 2272196880, 2556221490, 3408295320, 4089954384, 5112442980, 6816590640, 10224885960, 20449771920]

約数ペア:

[(1, 20449771920), (2, 10224885960), (3, 6816590640), (4, 5112442980), (5, 4089954384), (6, 3408295320), (8, 2556221490), (9, 2272196880), (10, 2044977192), (12, 1704147660), (15, 1363318128), (16, 1278110745), (17, 1202927760), (18, 1136098440), (20, 1022488596), (24, 852073830), (27, 757398960), (30, 681659064), (34, 601463880), (36, 568049220), (40, 511244298), (45, 454439376), (48, 426036915), (51, 400975920), (54, 378699480), (60, 340829532), (68, 300731940), (72, 284024610), (80, 255622149), (81, 252466320), (85, 240585552), (90, 227219688), (102, 200487960), (108, 189349740), (120, 170414766), (135, 151479792), (136, 150365970), (144, 142012305), (153, 133658640), (162, 126233160), (170, 120292776), (180, 113609844), (204, 100243980), (216, 94674870), (240, 85207383), (243, 84155440), (255, 80195184), (270, 75739896), (272, 75182985), (306, 66829320), (324, 63116580), (340, 60146388), (360, 56804922), (405, 50493264), (408, 50121990), (432, 47337435), (459, 44552880), (486, 42077720), (510, 40097592), (540, 37869948), (612, 33414660), (648, 31558290), (680, 30073194), (720, 28402461), (765, 26731728), (810, 25246632), (816, 25060995), (918, 22276440), (972, 21038860), (1020, 20048796), (1080, 18934974), (1215, 16831088), (1224, 16707330), (1296, 15779145), (1360, 15036597), (1377, 14850960), (1530, 13365864), (1620, 12623316), (1836, 11138220), (1944, 10519430), (2040, 10024398), (2160, 9467487), (2295, 8910576), (2430, 8415544), (2448, 8353665), (2754, 7425480), (3060, 6682932), (3240, 6311658), (3672, 5569110), (3888, 5259715), (4080, 5012199), (4131, 4950320), (4590, 4455288), (4860, 4207772), (5508, 3712740), (6120, 3341466), (6480, 3155829), (6885, 2970192), (7344, 2784555), (8262, 2475160), (9180, 2227644), (9720, 2103886), (11016, 1856370), (12240, 1670733), (13770, 1485096), (16524, 1237580), (18360, 1113822), (19440, 1051943), (20655, 990064), (22032, 928185), (27540, 742548), (33048, 618790), (36720, 556911), (41310, 495032), (55080, 371274), (61879, 330480), (66096, 309395), (82620, 247516), (110160, 185637), (123758, 165240)]