28872920

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{9137}}^1$

素因数の和:9227

約数の個数: 32

約数和(自身を含む): 65793600

約数和(自身を除く): 36920680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 9137, 18274, 36548, 45685, 73096, 91370, 182740, 365480, 721823, 1443646, 2887292, 3609115, 5774584, 7218230, 14436460, 28872920]

約数ペア:

[(1, 28872920), (2, 14436460), (4, 7218230), (5, 5774584), (8, 3609115), (10, 2887292), (20, 1443646), (40, 721823), (79, 365480), (158, 182740), (316, 91370), (395, 73096), (632, 45685), (790, 36548), (1580, 18274), (3160, 9137)]