21164864

素因数分解:

$2^6\times 7^2\times {\mathrm{17}}^1\times {\mathrm{397}}^1$

素因数の和:440

約数の個数: 84

約数和(自身を含む): 51860196

約数和(自身を除く): 30695332

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 49, 56, 64, 68, 98, 112, 119, 136, 196, 224, 238, 272, 392, 397, 448, 476, 544, 784, 794, 833, 952, 1088, 1568, 1588, 1666, 1904, 2779, 3136, 3176, 3332, 3808, 5558, 6352, 6664, 6749, 7616, 11116, 12704, 13328, 13498, 19453, 22232, 25408, 26656, 26996, 38906, 44464, 47243, 53312, 53992, 77812, 88928, 94486, 107984, 155624, 177856, 188972, 215968, 311248, 330701, 377944, 431936, 622496, 661402, 755888, 1244992, 1322804, 1511776, 2645608, 3023552, 5291216, 10582432, 21164864]

約数ペア:

[(1, 21164864), (2, 10582432), (4, 5291216), (7, 3023552), (8, 2645608), (14, 1511776), (16, 1322804), (17, 1244992), (28, 755888), (32, 661402), (34, 622496), (49, 431936), (56, 377944), (64, 330701), (68, 311248), (98, 215968), (112, 188972), (119, 177856), (136, 155624), (196, 107984), (224, 94486), (238, 88928), (272, 77812), (392, 53992), (397, 53312), (448, 47243), (476, 44464), (544, 38906), (784, 26996), (794, 26656), (833, 25408), (952, 22232), (1088, 19453), (1568, 13498), (1588, 13328), (1666, 12704), (1904, 11116), (2779, 7616), (3136, 6749), (3176, 6664), (3332, 6352), (3808, 5558)]