21919313

素因数分解:

${\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1\times {\mathrm{211}}^1$

素因数の和:416

約数の個数: 16

約数和(自身を含む): 24290112

約数和(自身を除く): 2370799

約数列:

[1, 13, 61, 131, 211, 793, 1703, 2743, 7991, 12871, 27641, 103883, 167323, 359333, 1686101, 21919313]

約数ペア:

[(1, 21919313), (13, 1686101), (61, 359333), (131, 167323), (211, 103883), (793, 27641), (1703, 12871), (2743, 7991)]