31910840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{563}}^1$

素因数の和:696

約数の個数: 64

約数和(自身を含む): 78170400

約数和(自身を除く): 46259560

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 109, 130, 218, 260, 436, 520, 545, 563, 872, 1090, 1126, 1417, 2180, 2252, 2815, 2834, 4360, 4504, 5630, 5668, 7085, 7319, 11260, 11336, 14170, 14638, 22520, 28340, 29276, 36595, 56680, 58552, 61367, 73190, 122734, 146380, 245468, 292760, 306835, 490936, 613670, 797771, 1227340, 1595542, 2454680, 3191084, 3988855, 6382168, 7977710, 15955420, 31910840]

約数ペア:

[(1, 31910840), (2, 15955420), (4, 7977710), (5, 6382168), (8, 3988855), (10, 3191084), (13, 2454680), (20, 1595542), (26, 1227340), (40, 797771), (52, 613670), (65, 490936), (104, 306835), (109, 292760), (130, 245468), (218, 146380), (260, 122734), (436, 73190), (520, 61367), (545, 58552), (563, 56680), (872, 36595), (1090, 29276), (1126, 28340), (1417, 22520), (2180, 14638), (2252, 14170), (2815, 11336), (2834, 11260), (4360, 7319), (4504, 7085), (5630, 5668)]