289318965

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{20897}}^1$

素因数の和:20989

約数の個数: 32

約数和(自身を含む): 505564416

約数和(自身を除く): 216245451

約数列:

[1, 3, 5, 13, 15, 39, 65, 71, 195, 213, 355, 923, 1065, 2769, 4615, 13845, 20897, 62691, 104485, 271661, 313455, 814983, 1358305, 1483687, 4074915, 4451061, 7418435, 19287931, 22255305, 57863793, 96439655, 289318965]

約数ペア:

[(1, 289318965), (3, 96439655), (5, 57863793), (13, 22255305), (15, 19287931), (39, 7418435), (65, 4451061), (71, 4074915), (195, 1483687), (213, 1358305), (355, 814983), (923, 313455), (1065, 271661), (2769, 104485), (4615, 62691), (13845, 20897)]