20885541

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{179}}^1$

素因数の和:313

約数の個数: 32

約数和(自身を含む): 31104000

約数和(自身を除く): 10218459

約数列:

[1, 3, 19, 23, 57, 69, 89, 179, 267, 437, 537, 1311, 1691, 2047, 3401, 4117, 5073, 6141, 10203, 12351, 15931, 38893, 47793, 78223, 116679, 234669, 302689, 366413, 908067, 1099239, 6961847, 20885541]

約数ペア:

[(1, 20885541), (3, 6961847), (19, 1099239), (23, 908067), (57, 366413), (69, 302689), (89, 234669), (179, 116679), (267, 78223), (437, 47793), (537, 38893), (1311, 15931), (1691, 12351), (2047, 10203), (3401, 6141), (4117, 5073)]