19869969

素因数分解:

$3^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{4243}}^1$

素因数の和:4476

約数の個数: 16

約数和(自身を含む): 30420992

約数和(自身を除く): 10551023

約数列:

[1, 3, 7, 21, 223, 669, 1561, 4243, 4683, 12729, 29701, 89103, 946189, 2838567, 6623323, 19869969]

約数ペア:

[(1, 19869969), (3, 6623323), (7, 2838567), (21, 946189), (223, 89103), (669, 29701), (1561, 12729), (4243, 4683)]