20538100

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{18671}}^1$

素因数の和:18696

約数の個数: 36

約数和(自身を含む): 48621888

約数和(自身を除く): 28083788

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 275, 550, 1100, 18671, 37342, 74684, 93355, 186710, 205381, 373420, 410762, 466775, 821524, 933550, 1026905, 1867100, 2053810, 4107620, 5134525, 10269050, 20538100]

約数ペア:

[(1, 20538100), (2, 10269050), (4, 5134525), (5, 4107620), (10, 2053810), (11, 1867100), (20, 1026905), (22, 933550), (25, 821524), (44, 466775), (50, 410762), (55, 373420), (100, 205381), (110, 186710), (220, 93355), (275, 74684), (550, 37342), (1100, 18671)]