21929019

素因数分解:

$3^1\times 7^3\times {\mathrm{101}}^1\times {\mathrm{211}}^1$

素因数の和:336

約数の個数: 32

約数和(自身を含む): 34598400

約数和(自身を除く): 12669381

約数列:

[1, 3, 7, 21, 49, 101, 147, 211, 303, 343, 633, 707, 1029, 1477, 2121, 4431, 4949, 10339, 14847, 21311, 31017, 34643, 63933, 72373, 103929, 149177, 217119, 447531, 1044239, 3132717, 7309673, 21929019]

約数ペア:

[(1, 21929019), (3, 7309673), (7, 3132717), (21, 1044239), (49, 447531), (101, 217119), (147, 149177), (211, 103929), (303, 72373), (343, 63933), (633, 34643), (707, 31017), (1029, 21311), (1477, 14847), (2121, 10339), (4431, 4949)]