640703187

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{227}}^1\times {\mathrm{7649}}^1$

素因数の和:7923

約数の個数: 24

約数和(自身を含む): 952333200

約数和(自身を除く): 311630013

約数列:

[1, 3, 9, 41, 123, 227, 369, 681, 2043, 7649, 9307, 22947, 27921, 68841, 83763, 313609, 940827, 1736323, 2822481, 5208969, 15626907, 71189243, 213567729, 640703187]

約数ペア:

[(1, 640703187), (3, 213567729), (9, 71189243), (41, 15626907), (123, 5208969), (227, 2822481), (369, 1736323), (681, 940827), (2043, 313609), (7649, 83763), (9307, 68841), (22947, 27921)]