81982145

素因数分解:

$5^1\times 7^4\times {\mathrm{6829}}^1$

素因数の和:6862

約数の個数: 20

約数和(自身を含む): 114784980

約数和(自身を除く): 32802835

約数列:

[1, 5, 7, 35, 49, 245, 343, 1715, 2401, 6829, 12005, 34145, 47803, 239015, 334621, 1673105, 2342347, 11711735, 16396429, 81982145]

約数ペア:

[(1, 81982145), (5, 16396429), (7, 11711735), (35, 2342347), (49, 1673105), (245, 334621), (343, 239015), (1715, 47803), (2401, 34145), (6829, 12005)]