18219880791

素因数分解:

$3^2\times 7^1\times {\mathrm{641}}^1\times {\mathrm{451177}}^1$

素因数の和:451831

約数の個数: 24

約数和(自身を含む): 30124252704

約数和(自身を除く): 11904371913

約数列:

[1, 3, 7, 9, 21, 63, 641, 1923, 4487, 5769, 13461, 40383, 451177, 1353531, 3158239, 4060593, 9474717, 28424151, 289204457, 867613371, 2024431199, 2602840113, 6073293597, 18219880791]

約数ペア:

[(1, 18219880791), (3, 6073293597), (7, 2602840113), (9, 2024431199), (21, 867613371), (63, 289204457), (641, 28424151), (1923, 9474717), (4487, 4060593), (5769, 3158239), (13461, 1353531), (40383, 451177)]