21246070

素因数分解:

$2^1\times 5^1\times {\mathrm{997}}^1\times {\mathrm{2131}}^1$

素因数の和:3135

約数の個数: 16

約数和(自身を含む): 38299248

約数和(自身を除く): 17053178

約数列:

[1, 2, 5, 10, 997, 1994, 2131, 4262, 4985, 9970, 10655, 21310, 2124607, 4249214, 10623035, 21246070]

約数ペア:

[(1, 21246070), (2, 10623035), (5, 4249214), (10, 2124607), (997, 21310), (1994, 10655), (2131, 9970), (4262, 4985)]