21997540

素因数分解:

$2^2\times 5^1\times {\mathrm{569}}^1\times {\mathrm{1933}}^1$

素因数の和:2511

約数の個数: 24

約数和(自身を含む): 46299960

約数和(自身を除く): 24302420

約数列:

[1, 2, 4, 5, 10, 20, 569, 1138, 1933, 2276, 2845, 3866, 5690, 7732, 9665, 11380, 19330, 38660, 1099877, 2199754, 4399508, 5499385, 10998770, 21997540]

約数ペア:

[(1, 21997540), (2, 10998770), (4, 5499385), (5, 4399508), (10, 2199754), (20, 1099877), (569, 38660), (1138, 19330), (1933, 11380), (2276, 9665), (2845, 7732), (3866, 5690)]