389655740

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{628477}}^1$

素因数の和:628517

約数の個数: 24

約数和(自身を含む): 844674432

約数和(自身を除く): 455018692

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 628477, 1256954, 2513908, 3142385, 6284770, 12569540, 19482787, 38965574, 77931148, 97413935, 194827870, 389655740]

約数ペア:

[(1, 389655740), (2, 194827870), (4, 97413935), (5, 77931148), (10, 38965574), (20, 19482787), (31, 12569540), (62, 6284770), (124, 3142385), (155, 2513908), (310, 1256954), (620, 628477)]