21409974

素因数分解:

$2^1\times 3^3\times {\mathrm{521}}^1\times {\mathrm{761}}^1$

素因数の和:1293

約数の個数: 32

約数和(自身を含む): 47731680

約数和(自身を除く): 26321706

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 521, 761, 1042, 1522, 1563, 2283, 3126, 4566, 4689, 6849, 9378, 13698, 14067, 20547, 28134, 41094, 396481, 792962, 1189443, 2378886, 3568329, 7136658, 10704987, 21409974]

約数ペア:

[(1, 21409974), (2, 10704987), (3, 7136658), (6, 3568329), (9, 2378886), (18, 1189443), (27, 792962), (54, 396481), (521, 41094), (761, 28134), (1042, 20547), (1522, 14067), (1563, 13698), (2283, 9378), (3126, 6849), (4566, 4689)]