21821149

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{233}}^1\times {\mathrm{787}}^1$

素因数の和:1044

約数の個数: 16

約数和(自身を含む): 26552448

約数和(自身を除く): 4731299

約数列:

[1, 7, 17, 119, 233, 787, 1631, 3961, 5509, 13379, 27727, 93653, 183371, 1283597, 3117307, 21821149]

約数ペア:

[(1, 21821149), (7, 3117307), (17, 1283597), (119, 183371), (233, 93653), (787, 27727), (1631, 13379), (3961, 5509)]