164681680

素因数分解:

$2^4\times 5^1\times {\mathrm{113}}^1\times {\mathrm{18217}}^1$

素因数の和:18343

約数の個数: 40

約数和(自身を含む): 386294472

約数和(自身を除く): 221612792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 113, 226, 452, 565, 904, 1130, 1808, 2260, 4520, 9040, 18217, 36434, 72868, 91085, 145736, 182170, 291472, 364340, 728680, 1457360, 2058521, 4117042, 8234084, 10292605, 16468168, 20585210, 32936336, 41170420, 82340840, 164681680]

約数ペア:

[(1, 164681680), (2, 82340840), (4, 41170420), (5, 32936336), (8, 20585210), (10, 16468168), (16, 10292605), (20, 8234084), (40, 4117042), (80, 2058521), (113, 1457360), (226, 728680), (452, 364340), (565, 291472), (904, 182170), (1130, 145736), (1808, 91085), (2260, 72868), (4520, 36434), (9040, 18217)]