21197406

素因数分解:

$2^1\times 3^1\times {\mathrm{521}}^1\times {\mathrm{6781}}^1$

素因数の和:7307

約数の個数: 16

約数和(自身を含む): 42482448

約数和(自身を除く): 21285042

約数列:

[1, 2, 3, 6, 521, 1042, 1563, 3126, 6781, 13562, 20343, 40686, 3532901, 7065802, 10598703, 21197406]

約数ペア:

[(1, 21197406), (2, 10598703), (3, 7065802), (6, 3532901), (521, 40686), (1042, 20343), (1563, 13562), (3126, 6781)]