21240726

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{272317}}^1$

素因数の和:272335

約数の個数: 16

約数和(自身を含む): 45749424

約数和(自身を除く): 24508698

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 272317, 544634, 816951, 1633902, 3540121, 7080242, 10620363, 21240726]

約数ペア:

[(1, 21240726), (2, 10620363), (3, 7080242), (6, 3540121), (13, 1633902), (26, 816951), (39, 544634), (78, 272317)]