21982870

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1$

素因数の和:87

約数の個数: 128

約数和(自身を含む): 54432000

約数和(自身を除く): 32449130

約数列:

[1, 2, 5, 7, 10, 13, 14, 17, 26, 29, 34, 35, 49, 58, 65, 70, 85, 91, 98, 119, 130, 145, 170, 182, 203, 221, 238, 245, 290, 343, 377, 406, 442, 455, 490, 493, 595, 637, 686, 754, 833, 910, 986, 1015, 1105, 1190, 1274, 1421, 1547, 1666, 1715, 1885, 2030, 2210, 2465, 2639, 2842, 3094, 3185, 3430, 3451, 3770, 4165, 4459, 4930, 5278, 5831, 6370, 6409, 6902, 7105, 7735, 8330, 8918, 9947, 10829, 11662, 12818, 13195, 14210, 15470, 17255, 18473, 19894, 21658, 22295, 24157, 26390, 29155, 32045, 34510, 36946, 44590, 44863, 48314, 49735, 54145, 58310, 64090, 75803, 89726, 92365, 99470, 108290, 120785, 129311, 151606, 169099, 184730, 224315, 241570, 258622, 314041, 338198, 379015, 448630, 628082, 646555, 758030, 845495, 1293110, 1570205, 1690990, 2198287, 3140410, 4396574, 10991435, 21982870]

約数ペア:

[(1, 21982870), (2, 10991435), (5, 4396574), (7, 3140410), (10, 2198287), (13, 1690990), (14, 1570205), (17, 1293110), (26, 845495), (29, 758030), (34, 646555), (35, 628082), (49, 448630), (58, 379015), (65, 338198), (70, 314041), (85, 258622), (91, 241570), (98, 224315), (119, 184730), (130, 169099), (145, 151606), (170, 129311), (182, 120785), (203, 108290), (221, 99470), (238, 92365), (245, 89726), (290, 75803), (343, 64090), (377, 58310), (406, 54145), (442, 49735), (455, 48314), (490, 44863), (493, 44590), (595, 36946), (637, 34510), (686, 32045), (754, 29155), (833, 26390), (910, 24157), (986, 22295), (1015, 21658), (1105, 19894), (1190, 18473), (1274, 17255), (1421, 15470), (1547, 14210), (1666, 13195), (1715, 12818), (1885, 11662), (2030, 10829), (2210, 9947), (2465, 8918), (2639, 8330), (2842, 7735), (3094, 7105), (3185, 6902), (3430, 6409), (3451, 6370), (3770, 5831), (4165, 5278), (4459, 4930)]