641560

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{373}}^1$

素因数の和:427

約数の個数: 32

約数和(自身を含む): 1481040

約数和(自身を除く): 839480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 373, 430, 746, 860, 1492, 1720, 1865, 2984, 3730, 7460, 14920, 16039, 32078, 64156, 80195, 128312, 160390, 320780, 641560]

約数ペア:

[(1, 641560), (2, 320780), (4, 160390), (5, 128312), (8, 80195), (10, 64156), (20, 32078), (40, 16039), (43, 14920), (86, 7460), (172, 3730), (215, 2984), (344, 1865), (373, 1720), (430, 1492), (746, 860)]