256440210

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{657539}}^1$

素因数の和:657562

約数の個数: 32

約数和(自身を含む): 662800320

約数和(自身を除く): 406360110

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 657539, 1315078, 1972617, 3287695, 3945234, 6575390, 8548007, 9863085, 17096014, 19726170, 25644021, 42740035, 51288042, 85480070, 128220105, 256440210]

約数ペア:

[(1, 256440210), (2, 128220105), (3, 85480070), (5, 51288042), (6, 42740035), (10, 25644021), (13, 19726170), (15, 17096014), (26, 9863085), (30, 8548007), (39, 6575390), (65, 3945234), (78, 3287695), (130, 1972617), (195, 1315078), (390, 657539)]