18280899

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{101}}^1$

素因数の和:157

約数の個数: 72

約数和(自身を含む): 34942752

約数和(自身を除く): 16661853

約数列:

[1, 3, 7, 9, 13, 17, 21, 39, 51, 63, 91, 101, 117, 119, 153, 169, 221, 273, 303, 357, 507, 663, 707, 819, 909, 1071, 1183, 1313, 1521, 1547, 1717, 1989, 2121, 2873, 3549, 3939, 4641, 5151, 6363, 8619, 9191, 10647, 11817, 12019, 13923, 15453, 17069, 20111, 22321, 25857, 27573, 36057, 51207, 60333, 66963, 82719, 108171, 119483, 153621, 156247, 180999, 200889, 290173, 358449, 468741, 870519, 1075347, 1406223, 2031211, 2611557, 6093633, 18280899]

約数ペア:

[(1, 18280899), (3, 6093633), (7, 2611557), (9, 2031211), (13, 1406223), (17, 1075347), (21, 870519), (39, 468741), (51, 358449), (63, 290173), (91, 200889), (101, 180999), (117, 156247), (119, 153621), (153, 119483), (169, 108171), (221, 82719), (273, 66963), (303, 60333), (357, 51207), (507, 36057), (663, 27573), (707, 25857), (819, 22321), (909, 20111), (1071, 17069), (1183, 15453), (1313, 13923), (1521, 12019), (1547, 11817), (1717, 10647), (1989, 9191), (2121, 8619), (2873, 6363), (3549, 5151), (3939, 4641)]