13315505

素因数分解:

$5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1$

素因数の和:198

約数の個数: 48

約数和(自身を含む): 20684160

約数和(自身を除く): 7368655

約数列:

[1, 5, 7, 17, 23, 35, 49, 85, 115, 119, 139, 161, 245, 391, 595, 695, 805, 833, 973, 1127, 1955, 2363, 2737, 3197, 4165, 4865, 5635, 6811, 11815, 13685, 15985, 16541, 19159, 22379, 34055, 54349, 82705, 95795, 111895, 115787, 156653, 271745, 380443, 578935, 783265, 1902215, 2663101, 13315505]

約数ペア:

[(1, 13315505), (5, 2663101), (7, 1902215), (17, 783265), (23, 578935), (35, 380443), (49, 271745), (85, 156653), (115, 115787), (119, 111895), (139, 95795), (161, 82705), (245, 54349), (391, 34055), (595, 22379), (695, 19159), (805, 16541), (833, 15985), (973, 13685), (1127, 11815), (1955, 6811), (2363, 5635), (2737, 4865), (3197, 4165)]