320031920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{23671}}^1$

素因数の和:23710

約数の個数: 60

約数和(自身を含む): 805747536

約数和(自身を除く): 485715616

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 169, 208, 260, 338, 520, 676, 845, 1040, 1352, 1690, 2704, 3380, 6760, 13520, 23671, 47342, 94684, 118355, 189368, 236710, 307723, 378736, 473420, 615446, 946840, 1230892, 1538615, 1893680, 2461784, 3077230, 4000399, 4923568, 6154460, 8000798, 12308920, 16001596, 20001995, 24617840, 32003192, 40003990, 64006384, 80007980, 160015960, 320031920]

約数ペア:

[(1, 320031920), (2, 160015960), (4, 80007980), (5, 64006384), (8, 40003990), (10, 32003192), (13, 24617840), (16, 20001995), (20, 16001596), (26, 12308920), (40, 8000798), (52, 6154460), (65, 4923568), (80, 4000399), (104, 3077230), (130, 2461784), (169, 1893680), (208, 1538615), (260, 1230892), (338, 946840), (520, 615446), (676, 473420), (845, 378736), (1040, 307723), (1352, 236710), (1690, 189368), (2704, 118355), (3380, 94684), (6760, 47342), (13520, 23671)]