18968985

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{6691}}^1$

素因数の和:6715

約数の個数: 40

約数和(自身を含む): 38867136

約数和(自身を除く): 19898151

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 315, 405, 567, 945, 2835, 6691, 20073, 33455, 46837, 60219, 100365, 140511, 180657, 234185, 301095, 421533, 541971, 702555, 903285, 1264599, 2107665, 2709855, 3793797, 6322995, 18968985]

約数ペア:

[(1, 18968985), (3, 6322995), (5, 3793797), (7, 2709855), (9, 2107665), (15, 1264599), (21, 903285), (27, 702555), (35, 541971), (45, 421533), (63, 301095), (81, 234185), (105, 180657), (135, 140511), (189, 100365), (315, 60219), (405, 46837), (567, 33455), (945, 20073), (2835, 6691)]