21768520

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{11579}}^1$

素因数の和:11637

約数の個数: 32

約数和(自身を含む): 50025600

約数和(自身を除く): 28257080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 11579, 23158, 46316, 57895, 92632, 115790, 231580, 463160, 544213, 1088426, 2176852, 2721065, 4353704, 5442130, 10884260, 21768520]

約数ペア:

[(1, 21768520), (2, 10884260), (4, 5442130), (5, 4353704), (8, 2721065), (10, 2176852), (20, 1088426), (40, 544213), (47, 463160), (94, 231580), (188, 115790), (235, 92632), (376, 57895), (470, 46316), (940, 23158), (1880, 11579)]