20844720

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1$

素因数の和:180

約数の個数: 240

約数和(自身を含む): 80432352

約数和(自身を除く): 59587632

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 17, 18, 20, 24, 26, 30, 34, 36, 39, 40, 45, 48, 51, 52, 60, 65, 68, 72, 78, 80, 85, 90, 102, 104, 117, 120, 130, 131, 136, 144, 153, 156, 170, 180, 195, 204, 208, 221, 234, 240, 255, 260, 262, 272, 306, 312, 340, 360, 390, 393, 408, 442, 468, 510, 520, 524, 585, 612, 624, 655, 663, 680, 720, 765, 780, 786, 816, 884, 936, 1020, 1040, 1048, 1105, 1170, 1179, 1224, 1310, 1326, 1360, 1530, 1560, 1572, 1703, 1768, 1872, 1965, 1989, 2040, 2096, 2210, 2227, 2340, 2358, 2448, 2620, 2652, 3060, 3120, 3144, 3315, 3406, 3536, 3930, 3978, 4080, 4420, 4454, 4680, 4716, 5109, 5240, 5304, 5895, 6120, 6288, 6630, 6681, 6812, 7860, 7956, 8515, 8840, 8908, 9360, 9432, 9945, 10218, 10480, 10608, 11135, 11790, 12240, 13260, 13362, 13624, 15327, 15720, 15912, 17030, 17680, 17816, 18864, 19890, 20043, 20436, 22270, 23580, 25545, 26520, 26724, 27248, 28951, 30654, 31440, 31824, 33405, 34060, 35632, 39780, 40086, 40872, 44540, 47160, 51090, 53040, 53448, 57902, 61308, 66810, 68120, 76635, 79560, 80172, 81744, 86853, 89080, 94320, 100215, 102180, 106896, 115804, 122616, 133620, 136240, 144755, 153270, 159120, 160344, 173706, 178160, 200430, 204360, 231608, 245232, 260559, 267240, 289510, 306540, 320688, 347412, 400860, 408720, 434265, 463216, 521118, 534480, 579020, 613080, 694824, 801720, 868530, 1042236, 1158040, 1226160, 1302795, 1389648, 1603440, 1737060, 2084472, 2316080, 2605590, 3474120, 4168944, 5211180, 6948240, 10422360, 20844720]

約数ペア:

[(1, 20844720), (2, 10422360), (3, 6948240), (4, 5211180), (5, 4168944), (6, 3474120), (8, 2605590), (9, 2316080), (10, 2084472), (12, 1737060), (13, 1603440), (15, 1389648), (16, 1302795), (17, 1226160), (18, 1158040), (20, 1042236), (24, 868530), (26, 801720), (30, 694824), (34, 613080), (36, 579020), (39, 534480), (40, 521118), (45, 463216), (48, 434265), (51, 408720), (52, 400860), (60, 347412), (65, 320688), (68, 306540), (72, 289510), (78, 267240), (80, 260559), (85, 245232), (90, 231608), (102, 204360), (104, 200430), (117, 178160), (120, 173706), (130, 160344), (131, 159120), (136, 153270), (144, 144755), (153, 136240), (156, 133620), (170, 122616), (180, 115804), (195, 106896), (204, 102180), (208, 100215), (221, 94320), (234, 89080), (240, 86853), (255, 81744), (260, 80172), (262, 79560), (272, 76635), (306, 68120), (312, 66810), (340, 61308), (360, 57902), (390, 53448), (393, 53040), (408, 51090), (442, 47160), (468, 44540), (510, 40872), (520, 40086), (524, 39780), (585, 35632), (612, 34060), (624, 33405), (655, 31824), (663, 31440), (680, 30654), (720, 28951), (765, 27248), (780, 26724), (786, 26520), (816, 25545), (884, 23580), (936, 22270), (1020, 20436), (1040, 20043), (1048, 19890), (1105, 18864), (1170, 17816), (1179, 17680), (1224, 17030), (1310, 15912), (1326, 15720), (1360, 15327), (1530, 13624), (1560, 13362), (1572, 13260), (1703, 12240), (1768, 11790), (1872, 11135), (1965, 10608), (1989, 10480), (2040, 10218), (2096, 9945), (2210, 9432), (2227, 9360), (2340, 8908), (2358, 8840), (2448, 8515), (2620, 7956), (2652, 7860), (3060, 6812), (3120, 6681), (3144, 6630), (3315, 6288), (3406, 6120), (3536, 5895), (3930, 5304), (3978, 5240), (4080, 5109), (4420, 4716), (4454, 4680)]