21691810

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{44269}}^1$

素因数の和:44290

約数の個数: 24

約数和(自身を含む): 45421020

約数和(自身を除く): 23729210

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 44269, 88538, 221345, 309883, 442690, 619766, 1549415, 2169181, 3098830, 4338362, 10845905, 21691810]

約数ペア:

[(1, 21691810), (2, 10845905), (5, 4338362), (7, 3098830), (10, 2169181), (14, 1549415), (35, 619766), (49, 442690), (70, 309883), (98, 221345), (245, 88538), (490, 44269)]