21640864

素因数分解:

$2^5\times 7^1\times {\mathrm{17}}^1\times {\mathrm{5683}}^1$

素因数の和:5717

約数の個数: 48

約数和(自身を含む): 51565248

約数和(自身を除く): 29924384

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 56, 68, 112, 119, 136, 224, 238, 272, 476, 544, 952, 1904, 3808, 5683, 11366, 22732, 39781, 45464, 79562, 90928, 96611, 159124, 181856, 193222, 318248, 386444, 636496, 676277, 772888, 1272992, 1352554, 1545776, 2705108, 3091552, 5410216, 10820432, 21640864]

約数ペア:

[(1, 21640864), (2, 10820432), (4, 5410216), (7, 3091552), (8, 2705108), (14, 1545776), (16, 1352554), (17, 1272992), (28, 772888), (32, 676277), (34, 636496), (56, 386444), (68, 318248), (112, 193222), (119, 181856), (136, 159124), (224, 96611), (238, 90928), (272, 79562), (476, 45464), (544, 39781), (952, 22732), (1904, 11366), (3808, 5683)]