21215974

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{6229}}^1$

素因数の和:6375

約数の個数: 16

約数和(自身を含む): 34539120

約数和(自身を除く): 13323146

約数列:

[1, 2, 13, 26, 131, 262, 1703, 3406, 6229, 12458, 80977, 161954, 815999, 1631998, 10607987, 21215974]

約数ペア:

[(1, 21215974), (2, 10607987), (13, 1631998), (26, 815999), (131, 161954), (262, 80977), (1703, 12458), (3406, 6229)]