685649680

素因数分解:

$2^4\times 5^1\times {\mathrm{8570621}}^1$

素因数の和:8570634

約数の個数: 20

約数和(自身を含む): 1594135692

約数和(自身を除く): 908486012

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 8570621, 17141242, 34282484, 42853105, 68564968, 85706210, 137129936, 171412420, 342824840, 685649680]

約数ペア:

[(1, 685649680), (2, 342824840), (4, 171412420), (5, 137129936), (8, 85706210), (10, 68564968), (16, 42853105), (20, 34282484), (40, 17141242), (80, 8570621)]