19965459

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1$

素因数の和:219

約数の個数: 32

約数和(自身を含む): 28892160

約数和(自身を除く): 8926701

約数列:

[1, 3, 37, 43, 47, 89, 111, 129, 141, 267, 1591, 1739, 2021, 3293, 3827, 4183, 4773, 5217, 6063, 9879, 11481, 12549, 74777, 141599, 154771, 179869, 224331, 424797, 464313, 539607, 6655153, 19965459]

約数ペア:

[(1, 19965459), (3, 6655153), (37, 539607), (43, 464313), (47, 424797), (89, 224331), (111, 179869), (129, 154771), (141, 141599), (267, 74777), (1591, 12549), (1739, 11481), (2021, 9879), (3293, 6063), (3827, 5217), (4183, 4773)]