18855720

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1$

素因数の和:129

約数の個数: 256

約数和(自身を含む): 72576000

約数和(自身を除く): 53720280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 17, 18, 20, 24, 26, 27, 30, 34, 36, 39, 40, 45, 51, 52, 54, 60, 65, 68, 72, 78, 79, 85, 90, 102, 104, 108, 117, 120, 130, 135, 136, 153, 156, 158, 170, 180, 195, 204, 216, 221, 234, 237, 255, 260, 270, 306, 312, 316, 340, 351, 360, 390, 395, 408, 442, 459, 468, 474, 510, 520, 540, 585, 612, 632, 663, 680, 702, 711, 765, 780, 790, 884, 918, 936, 948, 1020, 1027, 1080, 1105, 1170, 1185, 1224, 1326, 1343, 1404, 1422, 1530, 1560, 1580, 1755, 1768, 1836, 1896, 1989, 2040, 2054, 2133, 2210, 2295, 2340, 2370, 2652, 2686, 2808, 2844, 3060, 3081, 3160, 3315, 3510, 3555, 3672, 3978, 4029, 4108, 4266, 4420, 4590, 4680, 4740, 5135, 5304, 5372, 5688, 5967, 6120, 6162, 6630, 6715, 7020, 7110, 7956, 8058, 8216, 8532, 8840, 9180, 9243, 9480, 9945, 10270, 10665, 10744, 11934, 12087, 12324, 13260, 13430, 14040, 14220, 15405, 15912, 16116, 17064, 17459, 18360, 18486, 19890, 20145, 20540, 21330, 23868, 24174, 24648, 26520, 26860, 27729, 28440, 29835, 30810, 32232, 34918, 36261, 36972, 39780, 40290, 41080, 42660, 46215, 47736, 48348, 52377, 53720, 55458, 59670, 60435, 61620, 69836, 72522, 73944, 79560, 80580, 85320, 87295, 92430, 96696, 104754, 110916, 119340, 120870, 123240, 138645, 139672, 145044, 157131, 161160, 174590, 181305, 184860, 209508, 221832, 238680, 241740, 261885, 277290, 290088, 314262, 349180, 362610, 369720, 419016, 471393, 483480, 523770, 554580, 628524, 698360, 725220, 785655, 942786, 1047540, 1109160, 1257048, 1450440, 1571310, 1885572, 2095080, 2356965, 3142620, 3771144, 4713930, 6285240, 9427860, 18855720]

約数ペア:

[(1, 18855720), (2, 9427860), (3, 6285240), (4, 4713930), (5, 3771144), (6, 3142620), (8, 2356965), (9, 2095080), (10, 1885572), (12, 1571310), (13, 1450440), (15, 1257048), (17, 1109160), (18, 1047540), (20, 942786), (24, 785655), (26, 725220), (27, 698360), (30, 628524), (34, 554580), (36, 523770), (39, 483480), (40, 471393), (45, 419016), (51, 369720), (52, 362610), (54, 349180), (60, 314262), (65, 290088), (68, 277290), (72, 261885), (78, 241740), (79, 238680), (85, 221832), (90, 209508), (102, 184860), (104, 181305), (108, 174590), (117, 161160), (120, 157131), (130, 145044), (135, 139672), (136, 138645), (153, 123240), (156, 120870), (158, 119340), (170, 110916), (180, 104754), (195, 96696), (204, 92430), (216, 87295), (221, 85320), (234, 80580), (237, 79560), (255, 73944), (260, 72522), (270, 69836), (306, 61620), (312, 60435), (316, 59670), (340, 55458), (351, 53720), (360, 52377), (390, 48348), (395, 47736), (408, 46215), (442, 42660), (459, 41080), (468, 40290), (474, 39780), (510, 36972), (520, 36261), (540, 34918), (585, 32232), (612, 30810), (632, 29835), (663, 28440), (680, 27729), (702, 26860), (711, 26520), (765, 24648), (780, 24174), (790, 23868), (884, 21330), (918, 20540), (936, 20145), (948, 19890), (1020, 18486), (1027, 18360), (1080, 17459), (1105, 17064), (1170, 16116), (1185, 15912), (1224, 15405), (1326, 14220), (1343, 14040), (1404, 13430), (1422, 13260), (1530, 12324), (1560, 12087), (1580, 11934), (1755, 10744), (1768, 10665), (1836, 10270), (1896, 9945), (1989, 9480), (2040, 9243), (2054, 9180), (2133, 8840), (2210, 8532), (2295, 8216), (2340, 8058), (2370, 7956), (2652, 7110), (2686, 7020), (2808, 6715), (2844, 6630), (3060, 6162), (3081, 6120), (3160, 5967), (3315, 5688), (3510, 5372), (3555, 5304), (3672, 5135), (3978, 4740), (4029, 4680), (4108, 4590), (4266, 4420)]