21411549

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{907}}^1$

素因数の和:1017

約数の個数: 24

約数和(自身を含む): 32201312

約数和(自身を除く): 10789763

約数列:

[1, 3, 9, 43, 61, 129, 183, 387, 549, 907, 2623, 2721, 7869, 8163, 23607, 39001, 55327, 117003, 165981, 351009, 497943, 2379061, 7137183, 21411549]

約数ペア:

[(1, 21411549), (3, 7137183), (9, 2379061), (43, 497943), (61, 351009), (129, 165981), (183, 117003), (387, 55327), (549, 39001), (907, 23607), (2623, 8163), (2721, 7869)]