21964040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1669}}^1$

素因数の和:1734

約数の個数: 64

約数和(自身を含む): 57715200

約数和(自身を除く): 35751160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 47, 56, 70, 94, 140, 188, 235, 280, 329, 376, 470, 658, 940, 1316, 1645, 1669, 1880, 2632, 3290, 3338, 6580, 6676, 8345, 11683, 13160, 13352, 16690, 23366, 33380, 46732, 58415, 66760, 78443, 93464, 116830, 156886, 233660, 313772, 392215, 467320, 549101, 627544, 784430, 1098202, 1568860, 2196404, 2745505, 3137720, 4392808, 5491010, 10982020, 21964040]

約数ペア:

[(1, 21964040), (2, 10982020), (4, 5491010), (5, 4392808), (7, 3137720), (8, 2745505), (10, 2196404), (14, 1568860), (20, 1098202), (28, 784430), (35, 627544), (40, 549101), (47, 467320), (56, 392215), (70, 313772), (94, 233660), (140, 156886), (188, 116830), (235, 93464), (280, 78443), (329, 66760), (376, 58415), (470, 46732), (658, 33380), (940, 23366), (1316, 16690), (1645, 13352), (1669, 13160), (1880, 11683), (2632, 8345), (3290, 6676), (3338, 6580)]