20185007180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{523}}^1\times {\mathrm{1879}}^1$

素因数の和:2503

約数の個数: 96

約数和(自身を含む): 46340044800

約数和(自身を除く): 26155037620

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 130, 158, 260, 316, 395, 523, 790, 1027, 1046, 1580, 1879, 2054, 2092, 2615, 3758, 4108, 5135, 5230, 6799, 7516, 9395, 10270, 10460, 13598, 18790, 20540, 24427, 27196, 33995, 37580, 41317, 48854, 67990, 82634, 97708, 122135, 135980, 148441, 165268, 206585, 244270, 296882, 413170, 488540, 537121, 593764, 742205, 826340, 982717, 1074242, 1484410, 1929733, 1965434, 2148484, 2685605, 2968820, 3859466, 3930868, 4913585, 5371210, 7718932, 9648665, 9827170, 10742420, 12775321, 19297330, 19654340, 25550642, 38594660, 51101284, 63876605, 77634643, 127753210, 155269286, 255506420, 310538572, 388173215, 776346430, 1009250359, 1552692860, 2018500718, 4037001436, 5046251795, 10092503590, 20185007180]

約数ペア:

[(1, 20185007180), (2, 10092503590), (4, 5046251795), (5, 4037001436), (10, 2018500718), (13, 1552692860), (20, 1009250359), (26, 776346430), (52, 388173215), (65, 310538572), (79, 255506420), (130, 155269286), (158, 127753210), (260, 77634643), (316, 63876605), (395, 51101284), (523, 38594660), (790, 25550642), (1027, 19654340), (1046, 19297330), (1580, 12775321), (1879, 10742420), (2054, 9827170), (2092, 9648665), (2615, 7718932), (3758, 5371210), (4108, 4913585), (5135, 3930868), (5230, 3859466), (6799, 2968820), (7516, 2685605), (9395, 2148484), (10270, 1965434), (10460, 1929733), (13598, 1484410), (18790, 1074242), (20540, 982717), (24427, 826340), (27196, 742205), (33995, 593764), (37580, 537121), (41317, 488540), (48854, 413170), (67990, 296882), (82634, 244270), (97708, 206585), (122135, 165268), (135980, 148441)]