21501650

素因数分解:

$2^1\times 5^2\times {\mathrm{107}}^1\times {\mathrm{4019}}^1$

素因数の和:4138

約数の個数: 24

約数和(自身を含む): 40376880

約数和(自身を除く): 18875230

約数列:

[1, 2, 5, 10, 25, 50, 107, 214, 535, 1070, 2675, 4019, 5350, 8038, 20095, 40190, 100475, 200950, 430033, 860066, 2150165, 4300330, 10750825, 21501650]

約数ペア:

[(1, 21501650), (2, 10750825), (5, 4300330), (10, 2150165), (25, 860066), (50, 430033), (107, 200950), (214, 100475), (535, 40190), (1070, 20095), (2675, 8038), (4019, 5350)]