320198840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{615767}}^1$

素因数の和:615791

約数の個数: 32

約数和(自身を含む): 775867680

約数和(自身を除く): 455668840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 615767, 1231534, 2463068, 3078835, 4926136, 6157670, 8004971, 12315340, 16009942, 24630680, 32019884, 40024855, 64039768, 80049710, 160099420, 320198840]

約数ペア:

[(1, 320198840), (2, 160099420), (4, 80049710), (5, 64039768), (8, 40024855), (10, 32019884), (13, 24630680), (20, 16009942), (26, 12315340), (40, 8004971), (52, 6157670), (65, 4926136), (104, 3078835), (130, 2463068), (260, 1231534), (520, 615767)]