428778

素因数分解:

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

素因数の和:139

約数の個数: 48

約数和(自身を含む): 1100736

約数和(自身を除く): 671958

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 41, 42, 63, 82, 83, 123, 126, 166, 246, 249, 287, 369, 498, 574, 581, 738, 747, 861, 1162, 1494, 1722, 1743, 2583, 3403, 3486, 5166, 5229, 6806, 10209, 10458, 20418, 23821, 30627, 47642, 61254, 71463, 142926, 214389, 428778]

約数ペア:

[(1, 428778), (2, 214389), (3, 142926), (6, 71463), (7, 61254), (9, 47642), (14, 30627), (18, 23821), (21, 20418), (41, 10458), (42, 10209), (63, 6806), (82, 5229), (83, 5166), (123, 3486), (126, 3403), (166, 2583), (246, 1743), (249, 1722), (287, 1494), (369, 1162), (498, 861), (574, 747), (581, 738)]