21872331

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{2633}}^1$

素因数の和:2723

約数の個数: 24

約数和(自身を含む): 34515936

約数和(自身を除く): 12643605

約数列:

[1, 3, 9, 13, 39, 71, 117, 213, 639, 923, 2633, 2769, 7899, 8307, 23697, 34229, 102687, 186943, 308061, 560829, 1682487, 2430259, 7290777, 21872331]

約数ペア:

[(1, 21872331), (3, 7290777), (9, 2430259), (13, 1682487), (39, 560829), (71, 308061), (117, 186943), (213, 102687), (639, 34229), (923, 23697), (2633, 8307), (2769, 7899)]