20291560

素因数分解:

$2^3\times 5^1\times {\mathrm{507289}}^1$

素因数の和:507300

約数の個数: 16

約数和(自身を含む): 45656100

約数和(自身を除く): 25364540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 507289, 1014578, 2029156, 2536445, 4058312, 5072890, 10145780, 20291560]

約数ペア:

[(1, 20291560), (2, 10145780), (4, 5072890), (5, 4058312), (8, 2536445), (10, 2029156), (20, 1014578), (40, 507289)]