21581900

素因数分解:

$2^2\times 5^2\times {\mathrm{107}}^1\times {\mathrm{2017}}^1$

素因数の和:2138

約数の個数: 36

約数和(自身を含む): 47293848

約数和(自身を除く): 25711948

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 107, 214, 428, 535, 1070, 2017, 2140, 2675, 4034, 5350, 8068, 10085, 10700, 20170, 40340, 50425, 100850, 201700, 215819, 431638, 863276, 1079095, 2158190, 4316380, 5395475, 10790950, 21581900]

約数ペア:

[(1, 21581900), (2, 10790950), (4, 5395475), (5, 4316380), (10, 2158190), (20, 1079095), (25, 863276), (50, 431638), (100, 215819), (107, 201700), (214, 100850), (428, 50425), (535, 40340), (1070, 20170), (2017, 10700), (2140, 10085), (2675, 8068), (4034, 5350)]