21205688

素因数分解:

$2^3\times 7^1\times {\mathrm{107}}^1\times {\mathrm{3539}}^1$

素因数の和:3659

約数の個数: 32

約数和(自身を含む): 45878400

約数和(自身を除く): 24672712

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 107, 214, 428, 749, 856, 1498, 2996, 3539, 5992, 7078, 14156, 24773, 28312, 49546, 99092, 198184, 378673, 757346, 1514692, 2650711, 3029384, 5301422, 10602844, 21205688]

約数ペア:

[(1, 21205688), (2, 10602844), (4, 5301422), (7, 3029384), (8, 2650711), (14, 1514692), (28, 757346), (56, 378673), (107, 198184), (214, 99092), (428, 49546), (749, 28312), (856, 24773), (1498, 14156), (2996, 7078), (3539, 5992)]