257010

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{659}}^1$

素因数の和:682

約数の個数: 32

約数和(自身を含む): 665280

約数和(自身を除く): 408270

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 659, 1318, 1977, 3295, 3954, 6590, 8567, 9885, 17134, 19770, 25701, 42835, 51402, 85670, 128505, 257010]

約数ペア:

[(1, 257010), (2, 128505), (3, 85670), (5, 51402), (6, 42835), (10, 25701), (13, 19770), (15, 17134), (26, 9885), (30, 8567), (39, 6590), (65, 3954), (78, 3295), (130, 1977), (195, 1318), (390, 659)]