31721560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1151}}^1$

素因数の和:1228

約数の個数: 64

約数和(自身を含む): 78382080

約数和(自身を除く): 46660520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 53, 65, 104, 106, 130, 212, 260, 265, 424, 520, 530, 689, 1060, 1151, 1378, 2120, 2302, 2756, 3445, 4604, 5512, 5755, 6890, 9208, 11510, 13780, 14963, 23020, 27560, 29926, 46040, 59852, 61003, 74815, 119704, 122006, 149630, 244012, 299260, 305015, 488024, 598520, 610030, 793039, 1220060, 1586078, 2440120, 3172156, 3965195, 6344312, 7930390, 15860780, 31721560]

約数ペア:

[(1, 31721560), (2, 15860780), (4, 7930390), (5, 6344312), (8, 3965195), (10, 3172156), (13, 2440120), (20, 1586078), (26, 1220060), (40, 793039), (52, 610030), (53, 598520), (65, 488024), (104, 305015), (106, 299260), (130, 244012), (212, 149630), (260, 122006), (265, 119704), (424, 74815), (520, 61003), (530, 59852), (689, 46040), (1060, 29926), (1151, 27560), (1378, 23020), (2120, 14963), (2302, 13780), (2756, 11510), (3445, 9208), (4604, 6890), (5512, 5755)]