20881488

素因数分解:

$2^4\times 3^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{151}}^1$

素因数の和:272

約数の個数: 80

約数和(自身を含む): 56393216

約数和(自身を除く): 35511728

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 43, 48, 67, 86, 129, 134, 151, 172, 201, 258, 268, 302, 344, 402, 453, 516, 536, 604, 688, 804, 906, 1032, 1072, 1208, 1608, 1812, 2064, 2416, 2881, 3216, 3624, 5762, 6493, 7248, 8643, 10117, 11524, 12986, 17286, 19479, 20234, 23048, 25972, 30351, 34572, 38958, 40468, 46096, 51944, 60702, 69144, 77916, 80936, 103888, 121404, 138288, 155832, 161872, 242808, 311664, 435031, 485616, 870062, 1305093, 1740124, 2610186, 3480248, 5220372, 6960496, 10440744, 20881488]

約数ペア:

[(1, 20881488), (2, 10440744), (3, 6960496), (4, 5220372), (6, 3480248), (8, 2610186), (12, 1740124), (16, 1305093), (24, 870062), (43, 485616), (48, 435031), (67, 311664), (86, 242808), (129, 161872), (134, 155832), (151, 138288), (172, 121404), (201, 103888), (258, 80936), (268, 77916), (302, 69144), (344, 60702), (402, 51944), (453, 46096), (516, 40468), (536, 38958), (604, 34572), (688, 30351), (804, 25972), (906, 23048), (1032, 20234), (1072, 19479), (1208, 17286), (1608, 12986), (1812, 11524), (2064, 10117), (2416, 8643), (2881, 7248), (3216, 6493), (3624, 5762)]