19987443

素因数分解:

$3^2\times 7^2\times {\mathrm{61}}^1\times {\mathrm{743}}^1$

素因数の和:824

約数の個数: 36

約数和(自身を含む): 34180848

約数和(自身を除く): 14193405

約数列:

[1, 3, 7, 9, 21, 49, 61, 63, 147, 183, 427, 441, 549, 743, 1281, 2229, 2989, 3843, 5201, 6687, 8967, 15603, 26901, 36407, 45323, 46809, 109221, 135969, 317261, 327663, 407907, 951783, 2220827, 2855349, 6662481, 19987443]

約数ペア:

[(1, 19987443), (3, 6662481), (7, 2855349), (9, 2220827), (21, 951783), (49, 407907), (61, 327663), (63, 317261), (147, 135969), (183, 109221), (427, 46809), (441, 45323), (549, 36407), (743, 26901), (1281, 15603), (2229, 8967), (2989, 6687), (3843, 5201)]