21697690

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{44281}}^1$

素因数の和:44302

約数の個数: 24

約数和(自身を含む): 45433332

約数和(自身を除く): 23735642

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 44281, 88562, 221405, 309967, 442810, 619934, 1549835, 2169769, 3099670, 4339538, 10848845, 21697690]

約数ペア:

[(1, 21697690), (2, 10848845), (5, 4339538), (7, 3099670), (10, 2169769), (14, 1549835), (35, 619934), (49, 442810), (70, 309967), (98, 221405), (245, 88562), (490, 44281)]