81400270

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{271}}^1\times {\mathrm{613}}^1$

素因数の和:905

約数の個数: 48

約数和(自身を含む): 171350208

約数和(自身を除く): 89949938

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 271, 490, 542, 613, 1226, 1355, 1897, 2710, 3065, 3794, 4291, 6130, 8582, 9485, 13279, 18970, 21455, 26558, 30037, 42910, 60074, 66395, 132790, 150185, 166123, 300370, 332246, 830615, 1162861, 1661230, 2325722, 5814305, 8140027, 11628610, 16280054, 40700135, 81400270]

約数ペア:

[(1, 81400270), (2, 40700135), (5, 16280054), (7, 11628610), (10, 8140027), (14, 5814305), (35, 2325722), (49, 1661230), (70, 1162861), (98, 830615), (245, 332246), (271, 300370), (490, 166123), (542, 150185), (613, 132790), (1226, 66395), (1355, 60074), (1897, 42910), (2710, 30037), (3065, 26558), (3794, 21455), (4291, 18970), (6130, 13279), (8582, 9485)]