80214980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{129379}}^1$

素因数の和:129419

約数の個数: 24

約数和(自身を含む): 173886720

約数和(自身を除く): 93671740

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 129379, 258758, 517516, 646895, 1293790, 2587580, 4010749, 8021498, 16042996, 20053745, 40107490, 80214980]

約数ペア:

[(1, 80214980), (2, 40107490), (4, 20053745), (5, 16042996), (10, 8021498), (20, 4010749), (31, 2587580), (62, 1293790), (124, 646895), (155, 517516), (310, 258758), (620, 129379)]