21167404190

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{68281949}}^1$

素因数の和:68281987

約数の個数: 16

約数和(自身を含む): 39330403200

約数和(自身を除く): 18162999010

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 68281949, 136563898, 341409745, 682819490, 2116740419, 4233480838, 10583702095, 21167404190]

約数ペア:

[(1, 21167404190), (2, 10583702095), (5, 4233480838), (10, 2116740419), (31, 682819490), (62, 341409745), (155, 136563898), (310, 68281949)]