81263090

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{262139}}^1$

素因数の和:262177

約数の個数: 16

約数和(自身を含む): 150992640

約数和(自身を除く): 69729550

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 262139, 524278, 1310695, 2621390, 8126309, 16252618, 40631545, 81263090]

約数ペア:

[(1, 81263090), (2, 40631545), (5, 16252618), (10, 8126309), (31, 2621390), (62, 1310695), (155, 524278), (310, 262139)]