21021056

素因数分解:

$2^7\times 7^1\times {\mathrm{29}}^1\times {\mathrm{809}}^1$

素因数の和:859

約数の個数: 64

約数和(自身を含む): 49572000

約数和(自身を除く): 28550944

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 32, 56, 58, 64, 112, 116, 128, 203, 224, 232, 406, 448, 464, 809, 812, 896, 928, 1618, 1624, 1856, 3236, 3248, 3712, 5663, 6472, 6496, 11326, 12944, 12992, 22652, 23461, 25888, 25984, 45304, 46922, 51776, 90608, 93844, 103552, 164227, 181216, 187688, 328454, 362432, 375376, 656908, 724864, 750752, 1313816, 1501504, 2627632, 3003008, 5255264, 10510528, 21021056]

約数ペア:

[(1, 21021056), (2, 10510528), (4, 5255264), (7, 3003008), (8, 2627632), (14, 1501504), (16, 1313816), (28, 750752), (29, 724864), (32, 656908), (56, 375376), (58, 362432), (64, 328454), (112, 187688), (116, 181216), (128, 164227), (203, 103552), (224, 93844), (232, 90608), (406, 51776), (448, 46922), (464, 45304), (809, 25984), (812, 25888), (896, 23461), (928, 22652), (1618, 12992), (1624, 12944), (1856, 11326), (3236, 6496), (3248, 6472), (3712, 5663)]