13118920

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{2089}}^1$

素因数の和:2257

約数の個数: 32

約数和(自身を含む): 29719800

約数和(自身を除く): 16600880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 2089, 3140, 4178, 6280, 8356, 10445, 16712, 20890, 41780, 83560, 327973, 655946, 1311892, 1639865, 2623784, 3279730, 6559460, 13118920]

約数ペア:

[(1, 13118920), (2, 6559460), (4, 3279730), (5, 2623784), (8, 1639865), (10, 1311892), (20, 655946), (40, 327973), (157, 83560), (314, 41780), (628, 20890), (785, 16712), (1256, 10445), (1570, 8356), (2089, 6280), (3140, 4178)]