21187679

素因数分解:

${\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{181}}^1$

素因数の和:362

約数の個数: 16

約数和(自身を含む): 23019360

約数和(自身を除く): 1831681

約数列:

[1, 19, 61, 101, 181, 1159, 1919, 3439, 6161, 11041, 18281, 117059, 209779, 347339, 1115141, 21187679]

約数ペア:

[(1, 21187679), (19, 1115141), (61, 347339), (101, 209779), (181, 117059), (1159, 18281), (1919, 11041), (3439, 6161)]