15221619

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1$

素因数の和:208

約数の個数: 48

約数和(自身を含む): 26417664

約数和(自身を除く): 11196045

約数列:

[1, 3, 7, 9, 21, 41, 63, 71, 83, 123, 213, 249, 287, 369, 497, 581, 639, 747, 861, 1491, 1743, 2583, 2911, 3403, 4473, 5229, 5893, 8733, 10209, 17679, 20377, 23821, 26199, 30627, 41251, 53037, 61131, 71463, 123753, 183393, 214389, 241613, 371259, 724839, 1691291, 2174517, 5073873, 15221619]

約数ペア:

[(1, 15221619), (3, 5073873), (7, 2174517), (9, 1691291), (21, 724839), (41, 371259), (63, 241613), (71, 214389), (83, 183393), (123, 123753), (213, 71463), (249, 61131), (287, 53037), (369, 41251), (497, 30627), (581, 26199), (639, 23821), (747, 20377), (861, 17679), (1491, 10209), (1743, 8733), (2583, 5893), (2911, 5229), (3403, 4473)]