80788240

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{77681}}^1$

素因数の和:77707

約数の個数: 40

約数和(自身を含む): 202283928

約数和(自身を除く): 121495688

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 77681, 155362, 310724, 388405, 621448, 776810, 1009853, 1242896, 1553620, 2019706, 3107240, 4039412, 5049265, 6214480, 8078824, 10098530, 16157648, 20197060, 40394120, 80788240]

約数ペア:

[(1, 80788240), (2, 40394120), (4, 20197060), (5, 16157648), (8, 10098530), (10, 8078824), (13, 6214480), (16, 5049265), (20, 4039412), (26, 3107240), (40, 2019706), (52, 1553620), (65, 1242896), (80, 1009853), (104, 776810), (130, 621448), (208, 388405), (260, 310724), (520, 155362), (1040, 77681)]