254278839680

素因数分解:

$2^7\times 5^1\times {\mathrm{397310687}}^1$

素因数の和:397310706

約数の個数: 32

約数和(自身を含む): 607885352640

約数和(自身を除く): 353606512960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 397310687, 794621374, 1589242748, 1986553435, 3178485496, 3973106870, 6356970992, 7946213740, 12713941984, 15892427480, 25427883968, 31784854960, 50855767936, 63569709920, 127139419840, 254278839680]

約数ペア:

[(1, 254278839680), (2, 127139419840), (4, 63569709920), (5, 50855767936), (8, 31784854960), (10, 25427883968), (16, 15892427480), (20, 12713941984), (32, 7946213740), (40, 6356970992), (64, 3973106870), (80, 3178485496), (128, 1986553435), (160, 1589242748), (320, 794621374), (640, 397310687)]