213054009

素因数分解:

$3^1\times 7^2\times {\mathrm{307}}^1\times {\mathrm{4721}}^1$

素因数の和:5045

約数の個数: 24

約数和(自身を含む): 331597728

約数和(自身を除く): 118543719

約数列:

[1, 3, 7, 21, 49, 147, 307, 921, 2149, 4721, 6447, 14163, 15043, 33047, 45129, 99141, 231329, 693987, 1449347, 4348041, 10145429, 30436287, 71018003, 213054009]

約数ペア:

[(1, 213054009), (3, 71018003), (7, 30436287), (21, 10145429), (49, 4348041), (147, 1449347), (307, 693987), (921, 231329), (2149, 99141), (4721, 45129), (6447, 33047), (14163, 15043)]