20571100

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{18701}}^1$

素因数の和:18726

約数の個数: 36

約数和(自身を含む): 48700008

約数和(自身を除く): 28128908

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 275, 550, 1100, 18701, 37402, 74804, 93505, 187010, 205711, 374020, 411422, 467525, 822844, 935050, 1028555, 1870100, 2057110, 4114220, 5142775, 10285550, 20571100]

約数ペア:

[(1, 20571100), (2, 10285550), (4, 5142775), (5, 4114220), (10, 2057110), (11, 1870100), (20, 1028555), (22, 935050), (25, 822844), (44, 467525), (50, 411422), (55, 374020), (100, 205711), (110, 187010), (220, 93505), (275, 74804), (550, 37402), (1100, 18701)]