21290716

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{457}}^1\times {\mathrm{613}}^1$

素因数の和:1093

約数の個数: 24

約数和(自身を含む): 39369680

約数和(自身を除く): 18078964

約数列:

[1, 2, 4, 19, 38, 76, 457, 613, 914, 1226, 1828, 2452, 8683, 11647, 17366, 23294, 34732, 46588, 280141, 560282, 1120564, 5322679, 10645358, 21290716]

約数ペア:

[(1, 21290716), (2, 10645358), (4, 5322679), (19, 1120564), (38, 560282), (76, 280141), (457, 46588), (613, 34732), (914, 23294), (1226, 17366), (1828, 11647), (2452, 8683)]