21351743

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{983}}^1$

素因数の和:1126

約数の個数: 16

約数和(自身を含む): 25505280

約数和(自身を除く): 4153537

約数列:

[1, 7, 29, 107, 203, 749, 983, 3103, 6881, 21721, 28507, 105181, 199549, 736267, 3050249, 21351743]

約数ペア:

[(1, 21351743), (7, 3050249), (29, 736267), (107, 199549), (203, 105181), (749, 28507), (983, 21721), (3103, 6881)]