81421190

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{262649}}^1$

素因数の和:262687

約数の個数: 16

約数和(自身を含む): 151286400

約数和(自身を除く): 69865210

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 262649, 525298, 1313245, 2626490, 8142119, 16284238, 40710595, 81421190]

約数ペア:

[(1, 81421190), (2, 40710595), (5, 16284238), (10, 8142119), (31, 2626490), (62, 1313245), (155, 525298), (310, 262649)]