21999760

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{5851}}^1$

素因数の和:5911

約数の個数: 40

約数和(自身を含む): 52246656

約数和(自身を除く): 30246896

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 5851, 11702, 23404, 29255, 46808, 58510, 93616, 117020, 234040, 274997, 468080, 549994, 1099988, 1374985, 2199976, 2749970, 4399952, 5499940, 10999880, 21999760]

約数ペア:

[(1, 21999760), (2, 10999880), (4, 5499940), (5, 4399952), (8, 2749970), (10, 2199976), (16, 1374985), (20, 1099988), (40, 549994), (47, 468080), (80, 274997), (94, 234040), (188, 117020), (235, 93616), (376, 58510), (470, 46808), (752, 29255), (940, 23404), (1880, 11702), (3760, 5851)]