20191820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{91781}}^1$

素因数の和:91801

約数の個数: 24

約数和(自身を含む): 46258128

約数和(自身を除く): 26066308

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 91781, 183562, 367124, 458905, 917810, 1009591, 1835620, 2019182, 4038364, 5047955, 10095910, 20191820]

約数ペア:

[(1, 20191820), (2, 10095910), (4, 5047955), (5, 4038364), (10, 2019182), (11, 1835620), (20, 1009591), (22, 917810), (44, 458905), (55, 367124), (110, 183562), (220, 91781)]