19130980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{86959}}^1$

素因数の和:86979

約数の個数: 24

約数和(自身を含む): 43827840

約数和(自身を除く): 24696860

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 86959, 173918, 347836, 434795, 869590, 956549, 1739180, 1913098, 3826196, 4782745, 9565490, 19130980]

約数ペア:

[(1, 19130980), (2, 9565490), (4, 4782745), (5, 3826196), (10, 1913098), (11, 1739180), (20, 956549), (22, 869590), (44, 434795), (55, 347836), (110, 173918), (220, 86959)]