81751991

素因数分解:

${\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1\times {\mathrm{491}}^1$

素因数の和:694

約数の個数: 16

約数和(自身を含む): 87284736

約数和(自身を除く): 5532745

約数列:

[1, 31, 41, 131, 491, 1271, 4061, 5371, 15221, 20131, 64321, 166501, 624061, 1993951, 2637161, 81751991]

約数ペア:

[(1, 81751991), (31, 2637161), (41, 1993951), (131, 624061), (491, 166501), (1271, 64321), (4061, 20131), (5371, 15221)]