28162520

素因数分解:

$2^3\times 5^1\times {\mathrm{347}}^1\times {\mathrm{2029}}^1$

素因数の和:2387

約数の個数: 32

約数和(自身を含む): 63579600

約数和(自身を除く): 35417080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 347, 694, 1388, 1735, 2029, 2776, 3470, 4058, 6940, 8116, 10145, 13880, 16232, 20290, 40580, 81160, 704063, 1408126, 2816252, 3520315, 5632504, 7040630, 14081260, 28162520]

約数ペア:

[(1, 28162520), (2, 14081260), (4, 7040630), (5, 5632504), (8, 3520315), (10, 2816252), (20, 1408126), (40, 704063), (347, 81160), (694, 40580), (1388, 20290), (1735, 16232), (2029, 13880), (2776, 10145), (3470, 8116), (4058, 6940)]