640934788

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{277}}^1\times {\mathrm{44497}}^1$

素因数の和:44791

約数の個数: 24

約数和(自身を含む): 1212303512

約数和(自身を除く): 571368724

約数列:

[1, 2, 4, 13, 26, 52, 277, 554, 1108, 3601, 7202, 14404, 44497, 88994, 177988, 578461, 1156922, 2313844, 12325669, 24651338, 49302676, 160233697, 320467394, 640934788]

約数ペア:

[(1, 640934788), (2, 320467394), (4, 160233697), (13, 49302676), (26, 24651338), (52, 12325669), (277, 2313844), (554, 1156922), (1108, 578461), (3601, 177988), (7202, 88994), (14404, 44497)]