20180929360

素因数分解:

$2^4\times 5^1\times {\mathrm{487}}^1\times {\mathrm{517991}}^1$

素因数の和:518491

約数の個数: 40

約数和(自身を含む): 47017097856

約数和(自身を除く): 26836168496

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 487, 974, 1948, 2435, 3896, 4870, 7792, 9740, 19480, 38960, 517991, 1035982, 2071964, 2589955, 4143928, 5179910, 8287856, 10359820, 20719640, 41439280, 252261617, 504523234, 1009046468, 1261308085, 2018092936, 2522616170, 4036185872, 5045232340, 10090464680, 20180929360]

約数ペア:

[(1, 20180929360), (2, 10090464680), (4, 5045232340), (5, 4036185872), (8, 2522616170), (10, 2018092936), (16, 1261308085), (20, 1009046468), (40, 504523234), (80, 252261617), (487, 41439280), (974, 20719640), (1948, 10359820), (2435, 8287856), (3896, 5179910), (4870, 4143928), (7792, 2589955), (9740, 2071964), (19480, 1035982), (38960, 517991)]