20494475

素因数分解:

$5^2\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{151}}^1$

素因数の和:311

約数の個数: 24

約数和(自身を含む): 26292960

約数和(自身を除く): 5798485

約数列:

[1, 5, 25, 61, 89, 151, 305, 445, 755, 1525, 2225, 3775, 5429, 9211, 13439, 27145, 46055, 67195, 135725, 230275, 335975, 819779, 4098895, 20494475]

約数ペア:

[(1, 20494475), (5, 4098895), (25, 819779), (61, 335975), (89, 230275), (151, 135725), (305, 67195), (445, 46055), (755, 27145), (1525, 13439), (2225, 9211), (3775, 5429)]