21543645

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{263}}^1$

素因数の和:441

約数の個数: 32

約数和(自身を含む): 35684352

約数和(自身を除く): 14140707

約数列:

[1, 3, 5, 15, 43, 127, 129, 215, 263, 381, 635, 645, 789, 1315, 1905, 3945, 5461, 11309, 16383, 27305, 33401, 33927, 56545, 81915, 100203, 167005, 169635, 501015, 1436243, 4308729, 7181215, 21543645]

約数ペア:

[(1, 21543645), (3, 7181215), (5, 4308729), (15, 1436243), (43, 501015), (127, 169635), (129, 167005), (215, 100203), (263, 81915), (381, 56545), (635, 33927), (645, 33401), (789, 27305), (1315, 16383), (1905, 11309), (3945, 5461)]