21258735

素因数分解:

$3^1\times 5^1\times {\mathrm{617}}^1\times {\mathrm{2297}}^1$

素因数の和:2922

約数の個数: 16

約数和(自身を含む): 34083936

約数和(自身を除く): 12825201

約数列:

[1, 3, 5, 15, 617, 1851, 2297, 3085, 6891, 9255, 11485, 34455, 1417249, 4251747, 7086245, 21258735]

約数ペア:

[(1, 21258735), (3, 7086245), (5, 4251747), (15, 1417249), (617, 34455), (1851, 11485), (2297, 9255), (3085, 6891)]