19968920

素因数分解:

$2^3\times 5^1\times {\mathrm{467}}^1\times {\mathrm{1069}}^1$

素因数の和:1547

約数の個数: 32

約数和(自身を含む): 45068400

約数和(自身を除く): 25099480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 467, 934, 1069, 1868, 2138, 2335, 3736, 4276, 4670, 5345, 8552, 9340, 10690, 18680, 21380, 42760, 499223, 998446, 1996892, 2496115, 3993784, 4992230, 9984460, 19968920]

約数ペア:

[(1, 19968920), (2, 9984460), (4, 4992230), (5, 3993784), (8, 2496115), (10, 1996892), (20, 998446), (40, 499223), (467, 42760), (934, 21380), (1069, 18680), (1868, 10690), (2138, 9340), (2335, 8552), (3736, 5345), (4276, 4670)]