261639063

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{218579}}^1$

素因数の和:218611

約数の個数: 24

約数和(自身を含む): 454646400

約数和(自身を除く): 193007337

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 218579, 655737, 1530053, 1967211, 4153001, 4590159, 12459003, 13770477, 29071007, 37377009, 87213021, 261639063]

約数ペア:

[(1, 261639063), (3, 87213021), (7, 37377009), (9, 29071007), (19, 13770477), (21, 12459003), (57, 4590159), (63, 4153001), (133, 1967211), (171, 1530053), (399, 655737), (1197, 218579)]