19987352641

素因数分解:

${\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{4921781}}^1$

素因数の和:4921943

約数の個数: 8

約数和(自身を含む): 20789607168

約数和(自身を除く): 802254527

約数列:

[1, 31, 131, 4061, 4921781, 152575211, 644753311, 19987352641]

約数ペア:

[(1, 19987352641), (31, 644753311), (131, 152575211), (4061, 4921781)]