20778876

素因数分解:

$2^2\times 3^3\times {\mathrm{421}}^1\times {\mathrm{457}}^1$

素因数の和:891

約数の個数: 48

約数和(自身を含む): 54117280

約数和(自身を除く): 33338404

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 421, 457, 842, 914, 1263, 1371, 1684, 1828, 2526, 2742, 3789, 4113, 5052, 5484, 7578, 8226, 11367, 12339, 15156, 16452, 22734, 24678, 45468, 49356, 192397, 384794, 577191, 769588, 1154382, 1731573, 2308764, 3463146, 5194719, 6926292, 10389438, 20778876]

約数ペア:

[(1, 20778876), (2, 10389438), (3, 6926292), (4, 5194719), (6, 3463146), (9, 2308764), (12, 1731573), (18, 1154382), (27, 769588), (36, 577191), (54, 384794), (108, 192397), (421, 49356), (457, 45468), (842, 24678), (914, 22734), (1263, 16452), (1371, 15156), (1684, 12339), (1828, 11367), (2526, 8226), (2742, 7578), (3789, 5484), (4113, 5052)]