18902440

素因数分解:

$2^3\times 5^1\times {\mathrm{472561}}^1$

素因数の和:472572

約数の個数: 16

約数和(自身を含む): 42530580

約数和(自身を除く): 23628140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 472561, 945122, 1890244, 2362805, 3780488, 4725610, 9451220, 18902440]

約数ペア:

[(1, 18902440), (2, 9451220), (4, 4725610), (5, 3780488), (8, 2362805), (10, 1890244), (20, 945122), (40, 472561)]