208511391

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{389}}^1\times {\mathrm{439}}^1$

素因数の和:879

約数の個数: 32

約数和(自身を含む): 312998400

約数和(自身を除く): 104487009

約数列:

[1, 3, 11, 33, 37, 111, 389, 407, 439, 1167, 1221, 1317, 4279, 4829, 12837, 14393, 14487, 16243, 43179, 48729, 158323, 170771, 178673, 474969, 512313, 536019, 1878481, 5635443, 6318527, 18955581, 69503797, 208511391]

約数ペア:

[(1, 208511391), (3, 69503797), (11, 18955581), (33, 6318527), (37, 5635443), (111, 1878481), (389, 536019), (407, 512313), (439, 474969), (1167, 178673), (1221, 170771), (1317, 158323), (4279, 48729), (4829, 43179), (12837, 16243), (14393, 14487)]