320156720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{307843}}^1$

素因数の和:307869

約数の個数: 40

約数和(自身を含む): 801625776

約数和(自身を除く): 481469056

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 307843, 615686, 1231372, 1539215, 2462744, 3078430, 4001959, 4925488, 6156860, 8003918, 12313720, 16007836, 20009795, 24627440, 32015672, 40019590, 64031344, 80039180, 160078360, 320156720]

約数ペア:

[(1, 320156720), (2, 160078360), (4, 80039180), (5, 64031344), (8, 40019590), (10, 32015672), (13, 24627440), (16, 20009795), (20, 16007836), (26, 12313720), (40, 8003918), (52, 6156860), (65, 4925488), (80, 4001959), (104, 3078430), (130, 2462744), (208, 1539215), (260, 1231372), (520, 615686), (1040, 307843)]