31801640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2659}}^1$

素因数の和:2706

約数の個数: 64

約数和(自身を含む): 80438400

約数和(自身を除く): 48636760

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 23, 26, 40, 46, 52, 65, 92, 104, 115, 130, 184, 230, 260, 299, 460, 520, 598, 920, 1196, 1495, 2392, 2659, 2990, 5318, 5980, 10636, 11960, 13295, 21272, 26590, 34567, 53180, 61157, 69134, 106360, 122314, 138268, 172835, 244628, 276536, 305785, 345670, 489256, 611570, 691340, 795041, 1223140, 1382680, 1590082, 2446280, 3180164, 3975205, 6360328, 7950410, 15900820, 31801640]

約数ペア:

[(1, 31801640), (2, 15900820), (4, 7950410), (5, 6360328), (8, 3975205), (10, 3180164), (13, 2446280), (20, 1590082), (23, 1382680), (26, 1223140), (40, 795041), (46, 691340), (52, 611570), (65, 489256), (92, 345670), (104, 305785), (115, 276536), (130, 244628), (184, 172835), (230, 138268), (260, 122314), (299, 106360), (460, 69134), (520, 61157), (598, 53180), (920, 34567), (1196, 26590), (1495, 21272), (2392, 13295), (2659, 11960), (2990, 10636), (5318, 5980)]