21412840

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{5003}}^1$

素因数の和:5121

約数の個数: 32

約数和(自身を含む): 48638880

約数和(自身を除く): 27226040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 5003, 10006, 20012, 25015, 40024, 50030, 100060, 200120, 535321, 1070642, 2141284, 2676605, 4282568, 5353210, 10706420, 21412840]

約数ペア:

[(1, 21412840), (2, 10706420), (4, 5353210), (5, 4282568), (8, 2676605), (10, 2141284), (20, 1070642), (40, 535321), (107, 200120), (214, 100060), (428, 50030), (535, 40024), (856, 25015), (1070, 20012), (2140, 10006), (4280, 5003)]