9815980

素因数分解:

$2^2\times 5^1\times {\mathrm{193}}^1\times {\mathrm{2543}}^1$

素因数の和:2745

約数の個数: 24

約数和(自身を含む): 20728512

約数和(自身を除く): 10912532

約数列:

[1, 2, 4, 5, 10, 20, 193, 386, 772, 965, 1930, 2543, 3860, 5086, 10172, 12715, 25430, 50860, 490799, 981598, 1963196, 2453995, 4907990, 9815980]

約数ペア:

[(1, 9815980), (2, 4907990), (4, 2453995), (5, 1963196), (10, 981598), (20, 490799), (193, 50860), (386, 25430), (772, 12715), (965, 10172), (1930, 5086), (2543, 3860)]