397331360

素因数分解:

$2^5\times 5^1\times {\mathrm{199}}^1\times {\mathrm{12479}}^1$

素因数の和:12693

約数の個数: 48

約数和(自身を含む): 943488000

約数和(自身を除く): 546156640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 199, 398, 796, 995, 1592, 1990, 3184, 3980, 6368, 7960, 12479, 15920, 24958, 31840, 49916, 62395, 99832, 124790, 199664, 249580, 399328, 499160, 998320, 1996640, 2483321, 4966642, 9933284, 12416605, 19866568, 24833210, 39733136, 49666420, 79466272, 99332840, 198665680, 397331360]

約数ペア:

[(1, 397331360), (2, 198665680), (4, 99332840), (5, 79466272), (8, 49666420), (10, 39733136), (16, 24833210), (20, 19866568), (32, 12416605), (40, 9933284), (80, 4966642), (160, 2483321), (199, 1996640), (398, 998320), (796, 499160), (995, 399328), (1592, 249580), (1990, 199664), (3184, 124790), (3980, 99832), (6368, 62395), (7960, 49916), (12479, 31840), (15920, 24958)]