256214721

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{393571}}^1$

素因数の和:393612

約数の個数: 16

約数和(自身を含む): 403017728

約数和(自身を除く): 146803007

約数列:

[1, 3, 7, 21, 31, 93, 217, 651, 393571, 1180713, 2754997, 8264991, 12200701, 36602103, 85404907, 256214721]

約数ペア:

[(1, 256214721), (3, 85404907), (7, 36602103), (21, 12200701), (31, 8264991), (93, 2754997), (217, 1180713), (651, 393571)]