21378984

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{1723}}^1$

素因数の和:1790

約数の個数: 64

約数和(自身を含む): 59581440

約数和(自身を除く): 38202456

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 22, 24, 33, 44, 47, 66, 88, 94, 132, 141, 188, 264, 282, 376, 517, 564, 1034, 1128, 1551, 1723, 2068, 3102, 3446, 4136, 5169, 6204, 6892, 10338, 12408, 13784, 18953, 20676, 37906, 41352, 56859, 75812, 80981, 113718, 151624, 161962, 227436, 242943, 323924, 454872, 485886, 647848, 890791, 971772, 1781582, 1943544, 2672373, 3563164, 5344746, 7126328, 10689492, 21378984]

約数ペア:

[(1, 21378984), (2, 10689492), (3, 7126328), (4, 5344746), (6, 3563164), (8, 2672373), (11, 1943544), (12, 1781582), (22, 971772), (24, 890791), (33, 647848), (44, 485886), (47, 454872), (66, 323924), (88, 242943), (94, 227436), (132, 161962), (141, 151624), (188, 113718), (264, 80981), (282, 75812), (376, 56859), (517, 41352), (564, 37906), (1034, 20676), (1128, 18953), (1551, 13784), (1723, 12408), (2068, 10338), (3102, 6892), (3446, 6204), (4136, 5169)]