128605561

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{613}}^1$

素因数の和:721

約数の個数: 32

約数和(自身を含む): 163392768

約数和(自身を除く): 34787207

約数列:

[1, 7, 17, 41, 43, 119, 287, 301, 613, 697, 731, 1763, 4291, 4879, 5117, 10421, 12341, 25133, 26359, 29971, 72947, 175931, 184513, 209797, 427261, 448103, 1080719, 2990827, 3136721, 7565033, 18372223, 128605561]

約数ペア:

[(1, 128605561), (7, 18372223), (17, 7565033), (41, 3136721), (43, 2990827), (119, 1080719), (287, 448103), (301, 427261), (613, 209797), (697, 184513), (731, 175931), (1763, 72947), (4291, 29971), (4879, 26359), (5117, 25133), (10421, 12341)]