21894820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{26701}}^1$

素因数の和:26751

約数の個数: 24

約数和(自身を含む): 47102328

約数和(自身を除く): 25207508

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 26701, 53402, 106804, 133505, 267010, 534020, 1094741, 2189482, 4378964, 5473705, 10947410, 21894820]

約数ペア:

[(1, 21894820), (2, 10947410), (4, 5473705), (5, 4378964), (10, 2189482), (20, 1094741), (41, 534020), (82, 267010), (164, 133505), (205, 106804), (410, 53402), (820, 26701)]