28720760

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{15277}}^1$

素因数の和:15335

約数の個数: 32

約数和(自身を含む): 66000960

約数和(自身を除く): 37280200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 15277, 30554, 61108, 76385, 122216, 152770, 305540, 611080, 718019, 1436038, 2872076, 3590095, 5744152, 7180190, 14360380, 28720760]

約数ペア:

[(1, 28720760), (2, 14360380), (4, 7180190), (5, 5744152), (8, 3590095), (10, 2872076), (20, 1436038), (40, 718019), (47, 611080), (94, 305540), (188, 152770), (235, 122216), (376, 76385), (470, 61108), (940, 30554), (1880, 15277)]