51120560

素因数分解:

$2^4\times 5^1\times {\mathrm{639007}}^1$

素因数の和:639020

約数の個数: 20

約数和(自身を含む): 118855488

約数和(自身を除く): 67734928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 639007, 1278014, 2556028, 3195035, 5112056, 6390070, 10224112, 12780140, 25560280, 51120560]

約数ペア:

[(1, 51120560), (2, 25560280), (4, 12780140), (5, 10224112), (8, 6390070), (10, 5112056), (16, 3195035), (20, 2556028), (40, 1278014), (80, 639007)]