71746820

素因数分解:

$2^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{8521}}^1$

素因数の和:8951

約数の個数: 24

約数和(自身を含む): 151043928

約数和(自身を除く): 79297108

約数列:

[1, 2, 4, 5, 10, 20, 421, 842, 1684, 2105, 4210, 8420, 8521, 17042, 34084, 42605, 85210, 170420, 3587341, 7174682, 14349364, 17936705, 35873410, 71746820]

約数ペア:

[(1, 71746820), (2, 35873410), (4, 17936705), (5, 14349364), (10, 7174682), (20, 3587341), (421, 170420), (842, 85210), (1684, 42605), (2105, 34084), (4210, 17042), (8420, 8521)]