1820105

素因数分解:

$5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1$

素因数の和:78

約数の個数: 48

約数和(自身を含む): 2954880

約数和(自身を除く): 1134775

約数列:

[1, 5, 7, 17, 19, 23, 35, 49, 85, 95, 115, 119, 133, 161, 245, 323, 391, 437, 595, 665, 805, 833, 931, 1127, 1615, 1955, 2185, 2261, 2737, 3059, 4165, 4655, 5635, 7429, 11305, 13685, 15295, 15827, 19159, 21413, 37145, 52003, 79135, 95795, 107065, 260015, 364021, 1820105]

約数ペア:

[(1, 1820105), (5, 364021), (7, 260015), (17, 107065), (19, 95795), (23, 79135), (35, 52003), (49, 37145), (85, 21413), (95, 19159), (115, 15827), (119, 15295), (133, 13685), (161, 11305), (245, 7429), (323, 5635), (391, 4655), (437, 4165), (595, 3059), (665, 2737), (805, 2261), (833, 2185), (931, 1955), (1127, 1615)]