21676928

素因数分解:

$2^7\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1861}}^1$

素因数の和:1895

約数の個数: 64

約数和(自身を含む): 53178720

約数和(自身を除く): 31501792

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 64, 91, 104, 112, 128, 182, 208, 224, 364, 416, 448, 728, 832, 896, 1456, 1664, 1861, 2912, 3722, 5824, 7444, 11648, 13027, 14888, 24193, 26054, 29776, 48386, 52108, 59552, 96772, 104216, 119104, 169351, 193544, 208432, 238208, 338702, 387088, 416864, 677404, 774176, 833728, 1354808, 1548352, 1667456, 2709616, 3096704, 5419232, 10838464, 21676928]

約数ペア:

[(1, 21676928), (2, 10838464), (4, 5419232), (7, 3096704), (8, 2709616), (13, 1667456), (14, 1548352), (16, 1354808), (26, 833728), (28, 774176), (32, 677404), (52, 416864), (56, 387088), (64, 338702), (91, 238208), (104, 208432), (112, 193544), (128, 169351), (182, 119104), (208, 104216), (224, 96772), (364, 59552), (416, 52108), (448, 48386), (728, 29776), (832, 26054), (896, 24193), (1456, 14888), (1664, 13027), (1861, 11648), (2912, 7444), (3722, 5824)]