28742189

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1$

素因数の和:245

約数の個数: 32

約数和(自身を含む): 36723456

約数和(自身を除く): 7981267

約数列:

[1, 7, 17, 41, 43, 119, 137, 287, 301, 697, 731, 959, 1763, 2329, 4879, 5117, 5617, 5891, 12341, 16303, 29971, 39319, 41237, 95489, 100147, 209797, 241531, 668423, 701029, 1690717, 4106027, 28742189]

約数ペア:

[(1, 28742189), (7, 4106027), (17, 1690717), (41, 701029), (43, 668423), (119, 241531), (137, 209797), (287, 100147), (301, 95489), (697, 41237), (731, 39319), (959, 29971), (1763, 16303), (2329, 12341), (4879, 5891), (5117, 5617)]