21813845

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{1097}}^1$

素因数の和:1240

約数の個数: 16

約数和(自身を含む): 27116208

約数和(自身を除く): 5302363

約数列:

[1, 5, 41, 97, 205, 485, 1097, 3977, 5485, 19885, 44977, 106409, 224885, 532045, 4362769, 21813845]

約数ペア:

[(1, 21813845), (5, 4362769), (41, 532045), (97, 224885), (205, 106409), (485, 44977), (1097, 19885), (3977, 5485)]