21411537

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{521}}^1$

素因数の和:653

約数の個数: 32

約数和(自身を含む): 34744320

約数和(自身を除く): 13332783

約数列:

[1, 3, 7, 19, 21, 57, 103, 133, 309, 399, 521, 721, 1563, 1957, 2163, 3647, 5871, 9899, 10941, 13699, 29697, 41097, 53663, 69293, 160989, 207879, 375641, 1019597, 1126923, 3058791, 7137179, 21411537]

約数ペア:

[(1, 21411537), (3, 7137179), (7, 3058791), (19, 1126923), (21, 1019597), (57, 375641), (103, 207879), (133, 160989), (309, 69293), (399, 53663), (521, 41097), (721, 29697), (1563, 13699), (1957, 10941), (2163, 9899), (3647, 5871)]