20808460

素因数分解:

$2^2\times 5^1\times {\mathrm{307}}^1\times {\mathrm{3389}}^1$

素因数の和:3705

約数の個数: 24

約数和(自身を含む): 43853040

約数和(自身を除く): 23044580

約数列:

[1, 2, 4, 5, 10, 20, 307, 614, 1228, 1535, 3070, 3389, 6140, 6778, 13556, 16945, 33890, 67780, 1040423, 2080846, 4161692, 5202115, 10404230, 20808460]

約数ペア:

[(1, 20808460), (2, 10404230), (4, 5202115), (5, 4161692), (10, 2080846), (20, 1040423), (307, 67780), (614, 33890), (1228, 16945), (1535, 13556), (3070, 6778), (3389, 6140)]