31290660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1327}}^1$

素因数の和:1473

約数の個数: 72

約数和(自身を含む): 95711616

約数和(自身を除く): 64420956

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 131, 180, 262, 393, 524, 655, 786, 1179, 1310, 1327, 1572, 1965, 2358, 2620, 2654, 3930, 3981, 4716, 5308, 5895, 6635, 7860, 7962, 11790, 11943, 13270, 15924, 19905, 23580, 23886, 26540, 39810, 47772, 59715, 79620, 119430, 173837, 238860, 347674, 521511, 695348, 869185, 1043022, 1564533, 1738370, 2086044, 2607555, 3129066, 3476740, 5215110, 6258132, 7822665, 10430220, 15645330, 31290660]

約数ペア:

[(1, 31290660), (2, 15645330), (3, 10430220), (4, 7822665), (5, 6258132), (6, 5215110), (9, 3476740), (10, 3129066), (12, 2607555), (15, 2086044), (18, 1738370), (20, 1564533), (30, 1043022), (36, 869185), (45, 695348), (60, 521511), (90, 347674), (131, 238860), (180, 173837), (262, 119430), (393, 79620), (524, 59715), (655, 47772), (786, 39810), (1179, 26540), (1310, 23886), (1327, 23580), (1572, 19905), (1965, 15924), (2358, 13270), (2620, 11943), (2654, 11790), (3930, 7962), (3981, 7860), (4716, 6635), (5308, 5895)]