20854550

素因数分解:

$2^1\times 5^2\times {\mathrm{631}}^1\times {\mathrm{661}}^1$

素因数の和:1304

約数の個数: 24

約数和(自身を含む): 38909712

約数和(自身を除く): 18055162

約数列:

[1, 2, 5, 10, 25, 50, 631, 661, 1262, 1322, 3155, 3305, 6310, 6610, 15775, 16525, 31550, 33050, 417091, 834182, 2085455, 4170910, 10427275, 20854550]

約数ペア:

[(1, 20854550), (2, 10427275), (5, 4170910), (10, 2085455), (25, 834182), (50, 417091), (631, 33050), (661, 31550), (1262, 16525), (1322, 15775), (3155, 6610), (3305, 6310)]