21377745

素因数分解:

$3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{6691}}^1$

素因数の和:6773

約数の個数: 24

約数和(自身を含む): 37582272

約数和(自身を除く): 16204527

約数列:

[1, 3, 5, 9, 15, 45, 71, 213, 355, 639, 1065, 3195, 6691, 20073, 33455, 60219, 100365, 301095, 475061, 1425183, 2375305, 4275549, 7125915, 21377745]

約数ペア:

[(1, 21377745), (3, 7125915), (5, 4275549), (9, 2375305), (15, 1425183), (45, 475061), (71, 301095), (213, 100365), (355, 60219), (639, 33455), (1065, 20073), (3195, 6691)]