20121896440

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{103529}}^1$

素因数の和:103696

約数の個数: 64

約数和(自身を含む): 46737583200

約数和(自身を除く): 26615686760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 113, 172, 215, 226, 344, 430, 452, 565, 860, 904, 1130, 1720, 2260, 4520, 4859, 9718, 19436, 24295, 38872, 48590, 97180, 103529, 194360, 207058, 414116, 517645, 828232, 1035290, 2070580, 4141160, 4451747, 8903494, 11698777, 17806988, 22258735, 23397554, 35613976, 44517470, 46795108, 58493885, 89034940, 93590216, 116987770, 178069880, 233975540, 467951080, 503047411, 1006094822, 2012189644, 2515237055, 4024379288, 5030474110, 10060948220, 20121896440]

約数ペア:

[(1, 20121896440), (2, 10060948220), (4, 5030474110), (5, 4024379288), (8, 2515237055), (10, 2012189644), (20, 1006094822), (40, 503047411), (43, 467951080), (86, 233975540), (113, 178069880), (172, 116987770), (215, 93590216), (226, 89034940), (344, 58493885), (430, 46795108), (452, 44517470), (565, 35613976), (860, 23397554), (904, 22258735), (1130, 17806988), (1720, 11698777), (2260, 8903494), (4520, 4451747), (4859, 4141160), (9718, 2070580), (19436, 1035290), (24295, 828232), (38872, 517645), (48590, 414116), (97180, 207058), (103529, 194360)]