55140560

素因数分解:

$2^4\times 5^1\times {\mathrm{689257}}^1$

素因数の和:689270

約数の個数: 20

約数和(自身を含む): 128201988

約数和(自身を除く): 73061428

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 689257, 1378514, 2757028, 3446285, 5514056, 6892570, 11028112, 13785140, 27570280, 55140560]

約数ペア:

[(1, 55140560), (2, 27570280), (4, 13785140), (5, 11028112), (8, 6892570), (10, 5514056), (16, 3446285), (20, 2757028), (40, 1378514), (80, 689257)]