21357500

素因数分解:

$2^2\times 5^4\times {\mathrm{8543}}^1$

素因数の和:8567

約数の個数: 30

約数和(自身を含む): 46710048

約数和(自身を除く): 25352548

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 625, 1250, 2500, 8543, 17086, 34172, 42715, 85430, 170860, 213575, 427150, 854300, 1067875, 2135750, 4271500, 5339375, 10678750, 21357500]

約数ペア:

[(1, 21357500), (2, 10678750), (4, 5339375), (5, 4271500), (10, 2135750), (20, 1067875), (25, 854300), (50, 427150), (100, 213575), (125, 170860), (250, 85430), (500, 42715), (625, 34172), (1250, 17086), (2500, 8543)]