256890963

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{17401}}^1$

素因数の和:17467

約数の個数: 32

約数和(自身を含む): 423216640

約数和(自身を除く): 166325677

約数列:

[1, 3, 7, 19, 21, 37, 57, 111, 133, 259, 399, 703, 777, 2109, 4921, 14763, 17401, 52203, 121807, 330619, 365421, 643837, 991857, 1931511, 2314333, 4506859, 6942999, 12232903, 13520577, 36698709, 85630321, 256890963]

約数ペア:

[(1, 256890963), (3, 85630321), (7, 36698709), (19, 13520577), (21, 12232903), (37, 6942999), (57, 4506859), (111, 2314333), (133, 1931511), (259, 991857), (399, 643837), (703, 365421), (777, 330619), (2109, 121807), (4921, 52203), (14763, 17401)]