19135820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{86981}}^1$

素因数の和:87001

約数の個数: 24

約数和(自身を含む): 43838928

約数和(自身を除く): 24703108

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 86981, 173962, 347924, 434905, 869810, 956791, 1739620, 1913582, 3827164, 4783955, 9567910, 19135820]

約数ペア:

[(1, 19135820), (2, 9567910), (4, 4783955), (5, 3827164), (10, 1913582), (11, 1739620), (20, 956791), (22, 869810), (44, 434905), (55, 347924), (110, 173962), (220, 86981)]