31381160

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{263}}^1$

素因数の和:450

約数の個数: 64

約数和(自身を含む): 75081600

約数和(自身を除く): 43700440

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 157, 190, 263, 314, 380, 526, 628, 760, 785, 1052, 1256, 1315, 1570, 2104, 2630, 2983, 3140, 4997, 5260, 5966, 6280, 9994, 10520, 11932, 14915, 19988, 23864, 24985, 29830, 39976, 41291, 49970, 59660, 82582, 99940, 119320, 165164, 199880, 206455, 330328, 412910, 784529, 825820, 1569058, 1651640, 3138116, 3922645, 6276232, 7845290, 15690580, 31381160]

約数ペア:

[(1, 31381160), (2, 15690580), (4, 7845290), (5, 6276232), (8, 3922645), (10, 3138116), (19, 1651640), (20, 1569058), (38, 825820), (40, 784529), (76, 412910), (95, 330328), (152, 206455), (157, 199880), (190, 165164), (263, 119320), (314, 99940), (380, 82582), (526, 59660), (628, 49970), (760, 41291), (785, 39976), (1052, 29830), (1256, 24985), (1315, 23864), (1570, 19988), (2104, 14915), (2630, 11932), (2983, 10520), (3140, 9994), (4997, 6280), (5260, 5966)]