21302990

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{112121}}^1$

素因数の和:112147

約数の個数: 16

約数和(自身を含む): 40363920

約数和(自身を除く): 19060930

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 112121, 224242, 560605, 1121210, 2130299, 4260598, 10651495, 21302990]

約数ペア:

[(1, 21302990), (2, 10651495), (5, 4260598), (10, 2130299), (19, 1121210), (38, 560605), (95, 224242), (190, 112121)]