20474209

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{491}}^1$

素因数の和:565

約数の個数: 24

約数和(自身を含む): 25576128

約数和(自身を除く): 5101919

約数列:

[1, 7, 23, 37, 49, 161, 259, 491, 851, 1127, 1813, 3437, 5957, 11293, 18167, 24059, 41699, 79051, 127169, 417841, 553357, 890183, 2924887, 20474209]

約数ペア:

[(1, 20474209), (7, 2924887), (23, 890183), (37, 553357), (49, 417841), (161, 127169), (259, 79051), (491, 41699), (851, 24059), (1127, 18167), (1813, 11293), (3437, 5957)]