21401545

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{6379}}^1$

素因数の和:6456

約数の個数: 16

約数和(自身を含む): 28480320

約数和(自身を除く): 7078775

約数列:

[1, 5, 11, 55, 61, 305, 671, 3355, 6379, 31895, 70169, 350845, 389119, 1945595, 4280309, 21401545]

約数ペア:

[(1, 21401545), (5, 4280309), (11, 1945595), (55, 389119), (61, 350845), (305, 70169), (671, 31895), (3355, 6379)]