81812620

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{29429}}^1$

素因数の和:29577

約数の個数: 24

約数和(自身を含む): 173048400

約数和(自身を除く): 91235780

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 29429, 58858, 117716, 147145, 294290, 588580, 4090631, 8181262, 16362524, 20453155, 40906310, 81812620]

約数ペア:

[(1, 81812620), (2, 40906310), (4, 20453155), (5, 16362524), (10, 8181262), (20, 4090631), (139, 588580), (278, 294290), (556, 147145), (695, 117716), (1390, 58858), (2780, 29429)]