81915260

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{11941}}^1$

素因数の和:11971

約数の個数: 48

約数和(自身を含む): 200625600

約数和(自身を除く): 118710340

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 3430, 6860, 11941, 23882, 47764, 59705, 83587, 119410, 167174, 238820, 334348, 417935, 585109, 835870, 1170218, 1671740, 2340436, 2925545, 4095763, 5851090, 8191526, 11702180, 16383052, 20478815, 40957630, 81915260]

約数ペア:

[(1, 81915260), (2, 40957630), (4, 20478815), (5, 16383052), (7, 11702180), (10, 8191526), (14, 5851090), (20, 4095763), (28, 2925545), (35, 2340436), (49, 1671740), (70, 1170218), (98, 835870), (140, 585109), (196, 417935), (245, 334348), (343, 238820), (490, 167174), (686, 119410), (980, 83587), (1372, 59705), (1715, 47764), (3430, 23882), (6860, 11941)]