21049730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{161921}}^1$

素因数の和:161941

約数の個数: 16

約数和(自身を含む): 40804344

約数和(自身を除く): 19754614

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 161921, 323842, 809605, 1619210, 2104973, 4209946, 10524865, 21049730]

約数ペア:

[(1, 21049730), (2, 10524865), (5, 4209946), (10, 2104973), (13, 1619210), (26, 809605), (65, 323842), (130, 161921)]