19871445

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{1451}}^1$

素因数の和:1553

約数の個数: 32

約数和(自身を含む): 35126784

約数和(自身を除く): 15255339

約数列:

[1, 3, 5, 11, 15, 33, 55, 83, 165, 249, 415, 913, 1245, 1451, 2739, 4353, 4565, 7255, 13695, 15961, 21765, 47883, 79805, 120433, 239415, 361299, 602165, 1324763, 1806495, 3974289, 6623815, 19871445]

約数ペア:

[(1, 19871445), (3, 6623815), (5, 3974289), (11, 1806495), (15, 1324763), (33, 602165), (55, 361299), (83, 239415), (165, 120433), (249, 79805), (415, 47883), (913, 21765), (1245, 15961), (1451, 13695), (2739, 7255), (4353, 4565)]