254049920

素因数分解:

$2^7\times 5^1\times {\mathrm{396953}}^1$

素因数の和:396972

約数の個数: 32

約数和(自身を含む): 607339620

約数和(自身を除く): 353289700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 396953, 793906, 1587812, 1984765, 3175624, 3969530, 6351248, 7939060, 12702496, 15878120, 25404992, 31756240, 50809984, 63512480, 127024960, 254049920]

約数ペア:

[(1, 254049920), (2, 127024960), (4, 63512480), (5, 50809984), (8, 31756240), (10, 25404992), (16, 15878120), (20, 12702496), (32, 7939060), (40, 6351248), (64, 3969530), (80, 3175624), (128, 1984765), (160, 1587812), (320, 793906), (640, 396953)]