21811760

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{5801}}^1$

素因数の和:5861

約数の個数: 40

約数和(自身を含む): 51800256

約数和(自身を除く): 29988496

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 5801, 11602, 23204, 29005, 46408, 58010, 92816, 116020, 232040, 272647, 464080, 545294, 1090588, 1363235, 2181176, 2726470, 4362352, 5452940, 10905880, 21811760]

約数ペア:

[(1, 21811760), (2, 10905880), (4, 5452940), (5, 4362352), (8, 2726470), (10, 2181176), (16, 1363235), (20, 1090588), (40, 545294), (47, 464080), (80, 272647), (94, 232040), (188, 116020), (235, 92816), (376, 58010), (470, 46408), (752, 29005), (940, 23204), (1880, 11602), (3760, 5801)]