20986150

素因数分解:

$2^1\times 5^2\times {\mathrm{43}}^2\times {\mathrm{227}}^1$

素因数の和:325

約数の個数: 36

約数和(自身を含む): 40139172

約数和(自身を除く): 19153022

約数列:

[1, 2, 5, 10, 25, 43, 50, 86, 215, 227, 430, 454, 1075, 1135, 1849, 2150, 2270, 3698, 5675, 9245, 9761, 11350, 18490, 19522, 46225, 48805, 92450, 97610, 244025, 419723, 488050, 839446, 2098615, 4197230, 10493075, 20986150]

約数ペア:

[(1, 20986150), (2, 10493075), (5, 4197230), (10, 2098615), (25, 839446), (43, 488050), (50, 419723), (86, 244025), (215, 97610), (227, 92450), (430, 48805), (454, 46225), (1075, 19522), (1135, 18490), (1849, 11350), (2150, 9761), (2270, 9245), (3698, 5675)]