18921021

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31069}}^1$

素因数の和:31108

約数の個数: 16

約数和(自身を含む): 29827200

約数和(自身を除く): 10906179

約数列:

[1, 3, 7, 21, 29, 87, 203, 609, 31069, 93207, 217483, 652449, 901001, 2703003, 6307007, 18921021]

約数ペア:

[(1, 18921021), (3, 6307007), (7, 2703003), (21, 901001), (29, 652449), (87, 217483), (203, 93207), (609, 31069)]