728426920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1400821}}^1$

素因数の和:1400845

約数の個数: 32

約数和(自身を含む): 1765035720

約数和(自身を除く): 1036608800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 1400821, 2801642, 5603284, 7004105, 11206568, 14008210, 18210673, 28016420, 36421346, 56032840, 72842692, 91053365, 145685384, 182106730, 364213460, 728426920]

約数ペア:

[(1, 728426920), (2, 364213460), (4, 182106730), (5, 145685384), (8, 91053365), (10, 72842692), (13, 56032840), (20, 36421346), (26, 28016420), (40, 18210673), (52, 14008210), (65, 11206568), (104, 7004105), (130, 5603284), (260, 2801642), (520, 1400821)]