665667080

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1280129}}^1$

素因数の和:1280153

約数の個数: 32

約数和(自身を含む): 1612963800

約数和(自身を除く): 947296720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 1280129, 2560258, 5120516, 6400645, 10241032, 12801290, 16641677, 25602580, 33283354, 51205160, 66566708, 83208385, 133133416, 166416770, 332833540, 665667080]

約数ペア:

[(1, 665667080), (2, 332833540), (4, 166416770), (5, 133133416), (8, 83208385), (10, 66566708), (13, 51205160), (20, 33283354), (26, 25602580), (40, 16641677), (52, 12801290), (65, 10241032), (104, 6400645), (130, 5120516), (260, 2560258), (520, 1280129)]