20115556

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{17401}}^1$

素因数の和:17439

約数の個数: 18

約数和(自身を含む): 37396898

約数和(自身を除く): 17281342

約数列:

[1, 2, 4, 17, 34, 68, 289, 578, 1156, 17401, 34802, 69604, 295817, 591634, 1183268, 5028889, 10057778, 20115556]

約数ペア:

[(1, 20115556), (2, 10057778), (4, 5028889), (17, 1183268), (34, 591634), (68, 295817), (289, 69604), (578, 34802), (1156, 17401)]