71528289

素因数分解:

$3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{13151}}^1$

素因数の和:13205

約数の個数: 24

約数和(自身を含む): 113948928

約数和(自身を除く): 42420639

約数列:

[1, 3, 7, 21, 37, 49, 111, 147, 259, 777, 1813, 5439, 13151, 39453, 92057, 276171, 486587, 644399, 1459761, 1933197, 3406109, 10218327, 23842763, 71528289]

約数ペア:

[(1, 71528289), (3, 23842763), (7, 10218327), (21, 3406109), (37, 1933197), (49, 1459761), (111, 644399), (147, 486587), (259, 276171), (777, 92057), (1813, 39453), (5439, 13151)]