21078418

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{6857}}^1$

素因数の和:6941

約数の個数: 16

約数和(自身を含む): 33329880

約数和(自身を除く): 12251462

約数列:

[1, 2, 29, 53, 58, 106, 1537, 3074, 6857, 13714, 198853, 363421, 397706, 726842, 10539209, 21078418]

約数ペア:

[(1, 21078418), (2, 10539209), (29, 726842), (53, 397706), (58, 363421), (106, 198853), (1537, 13714), (3074, 6857)]