2780495277

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1\times {\mathrm{991}}^1$

素因数の和:1218

約数の個数: 64

約数和(自身を含む): 4574183424

約数和(自身を除く): 1793688147

約数列:

[1, 3, 7, 21, 23, 37, 69, 111, 157, 161, 259, 471, 483, 777, 851, 991, 1099, 2553, 2973, 3297, 3611, 5809, 5957, 6937, 10833, 17427, 17871, 20811, 22793, 25277, 36667, 40663, 68379, 75831, 110001, 121989, 133607, 155587, 159551, 256669, 400821, 466761, 478653, 770007, 843341, 935249, 1089109, 2530023, 2805747, 3267327, 3578501, 5756719, 5903387, 10735503, 17270157, 17710161, 25049507, 40297033, 75148521, 120891099, 132404537, 397213611, 926831759, 2780495277]

約数ペア:

[(1, 2780495277), (3, 926831759), (7, 397213611), (21, 132404537), (23, 120891099), (37, 75148521), (69, 40297033), (111, 25049507), (157, 17710161), (161, 17270157), (259, 10735503), (471, 5903387), (483, 5756719), (777, 3578501), (851, 3267327), (991, 2805747), (1099, 2530023), (2553, 1089109), (2973, 935249), (3297, 843341), (3611, 770007), (5809, 478653), (5957, 466761), (6937, 400821), (10833, 256669), (17427, 159551), (17871, 155587), (20811, 133607), (22793, 121989), (25277, 110001), (36667, 75831), (40663, 68379)]