251666961

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{433}}^1\times {\mathrm{2129}}^1$

素因数の和:2585

約数の個数: 32

約数和(自身を含む): 414140160

約数和(自身を除く): 162473199

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 433, 1299, 2129, 3031, 5629, 6387, 9093, 14903, 16887, 27677, 39403, 44709, 83031, 118209, 193739, 581217, 921857, 2765571, 6452999, 11984141, 19358997, 35952423, 83888987, 251666961]

約数ペア:

[(1, 251666961), (3, 83888987), (7, 35952423), (13, 19358997), (21, 11984141), (39, 6452999), (91, 2765571), (273, 921857), (433, 581217), (1299, 193739), (2129, 118209), (3031, 83031), (5629, 44709), (6387, 39403), (9093, 27677), (14903, 16887)]