21982185

素因数分解:

$3^4\times 5^1\times {\mathrm{54277}}^1$

素因数の和:54294

約数の個数: 20

約数和(自身を含む): 39405828

約数和(自身を除く): 17423643

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 54277, 162831, 271385, 488493, 814155, 1465479, 2442465, 4396437, 7327395, 21982185]

約数ペア:

[(1, 21982185), (3, 7327395), (5, 4396437), (9, 2442465), (15, 1465479), (27, 814155), (45, 488493), (81, 271385), (135, 162831), (405, 54277)]