19959555

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{1571}}^1$

素因数の和:1608

約数の個数: 48

約数和(自身を含む): 40142592

約数和(自身を除く): 20183037

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 121, 165, 231, 363, 385, 605, 847, 1155, 1571, 1815, 2541, 4235, 4713, 7855, 10997, 12705, 17281, 23565, 32991, 51843, 54985, 86405, 120967, 164955, 190091, 259215, 362901, 570273, 604835, 950455, 1330637, 1814505, 2851365, 3991911, 6653185, 19959555]

約数ペア:

[(1, 19959555), (3, 6653185), (5, 3991911), (7, 2851365), (11, 1814505), (15, 1330637), (21, 950455), (33, 604835), (35, 570273), (55, 362901), (77, 259215), (105, 190091), (121, 164955), (165, 120967), (231, 86405), (363, 54985), (385, 51843), (605, 32991), (847, 23565), (1155, 17281), (1571, 12705), (1815, 10997), (2541, 7855), (4235, 4713)]