205691440

素因数分解:

$2^4\times 5^1\times {\mathrm{827}}^1\times {\mathrm{3109}}^1$

素因数の和:3949

約数の個数: 40

約数和(自身を含む): 478964880

約数和(自身を除く): 273273440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 827, 1654, 3109, 3308, 4135, 6218, 6616, 8270, 12436, 13232, 15545, 16540, 24872, 31090, 33080, 49744, 62180, 66160, 124360, 248720, 2571143, 5142286, 10284572, 12855715, 20569144, 25711430, 41138288, 51422860, 102845720, 205691440]

約数ペア:

[(1, 205691440), (2, 102845720), (4, 51422860), (5, 41138288), (8, 25711430), (10, 20569144), (16, 12855715), (20, 10284572), (40, 5142286), (80, 2571143), (827, 248720), (1654, 124360), (3109, 66160), (3308, 62180), (4135, 49744), (6218, 33080), (6616, 31090), (8270, 24872), (12436, 16540), (13232, 15545)]