21158457

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{281}}^1\times {\mathrm{1321}}^1$

素因数の和:1624

約数の個数: 16

約数和(自身を含む): 29824320

約数和(自身を除く): 8665863

約数列:

[1, 3, 19, 57, 281, 843, 1321, 3963, 5339, 16017, 25099, 75297, 371201, 1113603, 7052819, 21158457]

約数ペア:

[(1, 21158457), (3, 7052819), (19, 1113603), (57, 371201), (281, 75297), (843, 25099), (1321, 16017), (3963, 5339)]