21644672

素因数分解:

$2^7\times 7^3\times {\mathrm{17}}^1\times {\mathrm{29}}^1$

素因数の和:81

約数の個数: 128

約数和(自身を含む): 55080000

約数和(自身を除く): 33435328

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 29, 32, 34, 49, 56, 58, 64, 68, 98, 112, 116, 119, 128, 136, 196, 203, 224, 232, 238, 272, 343, 392, 406, 448, 464, 476, 493, 544, 686, 784, 812, 833, 896, 928, 952, 986, 1088, 1372, 1421, 1568, 1624, 1666, 1856, 1904, 1972, 2176, 2744, 2842, 3136, 3248, 3332, 3451, 3712, 3808, 3944, 5488, 5684, 5831, 6272, 6496, 6664, 6902, 7616, 7888, 9947, 10976, 11368, 11662, 12992, 13328, 13804, 15232, 15776, 19894, 21952, 22736, 23324, 24157, 25984, 26656, 27608, 31552, 39788, 43904, 45472, 46648, 48314, 53312, 55216, 63104, 79576, 90944, 93296, 96628, 106624, 110432, 159152, 169099, 181888, 186592, 193256, 220864, 318304, 338198, 373184, 386512, 441728, 636608, 676396, 746368, 773024, 1273216, 1352792, 1546048, 2705584, 3092096, 5411168, 10822336, 21644672]

約数ペア:

[(1, 21644672), (2, 10822336), (4, 5411168), (7, 3092096), (8, 2705584), (14, 1546048), (16, 1352792), (17, 1273216), (28, 773024), (29, 746368), (32, 676396), (34, 636608), (49, 441728), (56, 386512), (58, 373184), (64, 338198), (68, 318304), (98, 220864), (112, 193256), (116, 186592), (119, 181888), (128, 169099), (136, 159152), (196, 110432), (203, 106624), (224, 96628), (232, 93296), (238, 90944), (272, 79576), (343, 63104), (392, 55216), (406, 53312), (448, 48314), (464, 46648), (476, 45472), (493, 43904), (544, 39788), (686, 31552), (784, 27608), (812, 26656), (833, 25984), (896, 24157), (928, 23324), (952, 22736), (986, 21952), (1088, 19894), (1372, 15776), (1421, 15232), (1568, 13804), (1624, 13328), (1666, 12992), (1856, 11662), (1904, 11368), (1972, 10976), (2176, 9947), (2744, 7888), (2842, 7616), (3136, 6902), (3248, 6664), (3332, 6496), (3451, 6272), (3712, 5831), (3808, 5684), (3944, 5488)]