520020560

素因数分解:

$2^4\times 5^1\times {\mathrm{6500257}}^1$

素因数の和:6500270

約数の個数: 20

約数和(自身を含む): 1209047988

約数和(自身を除く): 689027428

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 6500257, 13000514, 26001028, 32501285, 52002056, 65002570, 104004112, 130005140, 260010280, 520020560]

約数ペア:

[(1, 520020560), (2, 260010280), (4, 130005140), (5, 104004112), (8, 65002570), (10, 52002056), (16, 32501285), (20, 26001028), (40, 13000514), (80, 6500257)]