21281835

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{30187}}^1$

素因数の和:30242

約数の個数: 16

約数和(自身を含む): 34776576

約数和(自身を除く): 13494741

約数列:

[1, 3, 5, 15, 47, 141, 235, 705, 30187, 90561, 150935, 452805, 1418789, 4256367, 7093945, 21281835]

約数ペア:

[(1, 21281835), (3, 7093945), (5, 4256367), (15, 1418789), (47, 452805), (141, 150935), (235, 90561), (705, 30187)]