21553630

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{43987}}^1$

素因数の和:44008

約数の個数: 24

約数和(自身を含む): 45131688

約数和(自身を除く): 23578058

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 43987, 87974, 219935, 307909, 439870, 615818, 1539545, 2155363, 3079090, 4310726, 10776815, 21553630]

約数ペア:

[(1, 21553630), (2, 10776815), (5, 4310726), (7, 3079090), (10, 2155363), (14, 1539545), (35, 615818), (49, 439870), (70, 307909), (98, 219935), (245, 87974), (490, 43987)]