20666288

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{75979}}^1$

素因数の和:76004

約数の個数: 20

約数和(自身を含む): 42396840

約数和(自身を除く): 21730552

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 75979, 151958, 303916, 607832, 1215664, 1291643, 2583286, 5166572, 10333144, 20666288]

約数ペア:

[(1, 20666288), (2, 10333144), (4, 5166572), (8, 2583286), (16, 1291643), (17, 1215664), (34, 607832), (68, 303916), (136, 151958), (272, 75979)]