13281880

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{1489}}^1$

素因数の和:1723

約数の個数: 32

約数和(自身を含む): 30038400

約数和(自身を除く): 16756520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1489, 1784, 2230, 2978, 4460, 5956, 7445, 8920, 11912, 14890, 29780, 59560, 332047, 664094, 1328188, 1660235, 2656376, 3320470, 6640940, 13281880]

約数ペア:

[(1, 13281880), (2, 6640940), (4, 3320470), (5, 2656376), (8, 1660235), (10, 1328188), (20, 664094), (40, 332047), (223, 59560), (446, 29780), (892, 14890), (1115, 11912), (1489, 8920), (1784, 7445), (2230, 5956), (2978, 4460)]