21146209

素因数分解:

$7^1\times {\mathrm{103}}^1\times {\mathrm{139}}^1\times {\mathrm{211}}^1$

素因数の和:460

約数の個数: 16

約数和(自身を含む): 24693760

約数和(自身を除く): 3547551

約数列:

[1, 7, 103, 139, 211, 721, 973, 1477, 14317, 21733, 29329, 100219, 152131, 205303, 3020887, 21146209]

約数ペア:

[(1, 21146209), (7, 3020887), (103, 205303), (139, 152131), (211, 100219), (721, 29329), (973, 21733), (1477, 14317)]