12399640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{28181}}^1$

素因数の和:28203

約数の個数: 32

約数和(自身を含む): 30436560

約数和(自身を除く): 18036920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 28181, 56362, 112724, 140905, 225448, 281810, 309991, 563620, 619982, 1127240, 1239964, 1549955, 2479928, 3099910, 6199820, 12399640]

約数ペア:

[(1, 12399640), (2, 6199820), (4, 3099910), (5, 2479928), (8, 1549955), (10, 1239964), (11, 1127240), (20, 619982), (22, 563620), (40, 309991), (44, 281810), (55, 225448), (88, 140905), (110, 112724), (220, 56362), (440, 28181)]