21231686

素因数分解:

$2^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{787}}^1$

素因数の和:884

約数の個数: 32

約数和(自身を含む): 38126592

約数和(自身を除く): 16894906

約数列:

[1, 2, 7, 14, 41, 47, 82, 94, 287, 329, 574, 658, 787, 1574, 1927, 3854, 5509, 11018, 13489, 26978, 32267, 36989, 64534, 73978, 225869, 258923, 451738, 517846, 1516549, 3033098, 10615843, 21231686]

約数ペア:

[(1, 21231686), (2, 10615843), (7, 3033098), (14, 1516549), (41, 517846), (47, 451738), (82, 258923), (94, 225869), (287, 73978), (329, 64534), (574, 36989), (658, 32267), (787, 26978), (1574, 13489), (1927, 11018), (3854, 5509)]