280804880

素因数分解:

$2^4\times 5^1\times {\mathrm{1129}}^1\times {\mathrm{3109}}^1$

素因数の和:4251

約数の個数: 40

約数和(自身を含む): 653659800

約数和(自身を除く): 372854920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1129, 2258, 3109, 4516, 5645, 6218, 9032, 11290, 12436, 15545, 18064, 22580, 24872, 31090, 45160, 49744, 62180, 90320, 124360, 248720, 3510061, 7020122, 14040244, 17550305, 28080488, 35100610, 56160976, 70201220, 140402440, 280804880]

約数ペア:

[(1, 280804880), (2, 140402440), (4, 70201220), (5, 56160976), (8, 35100610), (10, 28080488), (16, 17550305), (20, 14040244), (40, 7020122), (80, 3510061), (1129, 248720), (2258, 124360), (3109, 90320), (4516, 62180), (5645, 49744), (6218, 45160), (9032, 31090), (11290, 24872), (12436, 22580), (15545, 18064)]