21780010

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{44449}}^1$

素因数の和:44470

約数の個数: 24

約数和(自身を含む): 45605700

約数和(自身を除く): 23825690

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 44449, 88898, 222245, 311143, 444490, 622286, 1555715, 2178001, 3111430, 4356002, 10890005, 21780010]

約数ペア:

[(1, 21780010), (2, 10890005), (5, 4356002), (7, 3111430), (10, 2178001), (14, 1555715), (35, 622286), (49, 444490), (70, 311143), (98, 222245), (245, 88898), (490, 44449)]