81972385

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{87671}}^1$

素因数の和:87704

約数の個数: 16

約数和(自身を含む): 113622912

約数和(自身を除く): 31650527

約数列:

[1, 5, 11, 17, 55, 85, 187, 935, 87671, 438355, 964381, 1490407, 4821905, 7452035, 16394477, 81972385]

約数ペア:

[(1, 81972385), (5, 16394477), (11, 7452035), (17, 4821905), (55, 1490407), (85, 964381), (187, 438355), (935, 87671)]