256750480

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{458483}}^1$

素因数の和:458503

約数の個数: 40

約数和(自身を含む): 682224192

約数和(自身を除く): 425473712

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 458483, 916966, 1833932, 2292415, 3209381, 3667864, 4584830, 6418762, 7335728, 9169660, 12837524, 16046905, 18339320, 25675048, 32093810, 36678640, 51350096, 64187620, 128375240, 256750480]

約数ペア:

[(1, 256750480), (2, 128375240), (4, 64187620), (5, 51350096), (7, 36678640), (8, 32093810), (10, 25675048), (14, 18339320), (16, 16046905), (20, 12837524), (28, 9169660), (35, 7335728), (40, 6418762), (56, 4584830), (70, 3667864), (80, 3209381), (112, 2292415), (140, 1833932), (280, 916966), (560, 458483)]