20806410

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{127}}^2$

素因数の和:307

約数の個数: 48

約数和(自身を含む): 51502176

約数和(自身を除く): 30695766

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 43, 86, 127, 129, 215, 254, 258, 381, 430, 635, 645, 762, 1270, 1290, 1905, 3810, 5461, 10922, 16129, 16383, 27305, 32258, 32766, 48387, 54610, 80645, 81915, 96774, 161290, 163830, 241935, 483870, 693547, 1387094, 2080641, 3467735, 4161282, 6935470, 10403205, 20806410]

約数ペア:

[(1, 20806410), (2, 10403205), (3, 6935470), (5, 4161282), (6, 3467735), (10, 2080641), (15, 1387094), (30, 693547), (43, 483870), (86, 241935), (127, 163830), (129, 161290), (215, 96774), (254, 81915), (258, 80645), (381, 54610), (430, 48387), (635, 32766), (645, 32258), (762, 27305), (1270, 16383), (1290, 16129), (1905, 10922), (3810, 5461)]