21881560

素因数分解:

$2^3\times 5^1\times {\mathrm{283}}^1\times {\mathrm{1933}}^1$

素因数の和:2227

約数の個数: 32

約数和(自身を含む): 49433040

約数和(自身を除く): 27551480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 283, 566, 1132, 1415, 1933, 2264, 2830, 3866, 5660, 7732, 9665, 11320, 15464, 19330, 38660, 77320, 547039, 1094078, 2188156, 2735195, 4376312, 5470390, 10940780, 21881560]

約数ペア:

[(1, 21881560), (2, 10940780), (4, 5470390), (5, 4376312), (8, 2735195), (10, 2188156), (20, 1094078), (40, 547039), (283, 77320), (566, 38660), (1132, 19330), (1415, 15464), (1933, 11320), (2264, 9665), (2830, 7732), (3866, 5660)]