19938820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{90631}}^1$

素因数の和:90651

約数の個数: 24

約数和(自身を含む): 45678528

約数和(自身を除く): 25739708

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 90631, 181262, 362524, 453155, 906310, 996941, 1812620, 1993882, 3987764, 4984705, 9969410, 19938820]

約数ペア:

[(1, 19938820), (2, 9969410), (4, 4984705), (5, 3987764), (10, 1993882), (11, 1812620), (20, 996941), (22, 906310), (44, 453155), (55, 362524), (110, 181262), (220, 90631)]