21017325

素因数分解:

$3^1\times 5^2\times 7^3\times {\mathrm{19}}^1\times {\mathrm{43}}^1$

素因数の和:96

約数の個数: 96

約数和(自身を含む): 43648000

約数和(自身を除く): 22630675

約数列:

[1, 3, 5, 7, 15, 19, 21, 25, 35, 43, 49, 57, 75, 95, 105, 129, 133, 147, 175, 215, 245, 285, 301, 343, 399, 475, 525, 645, 665, 735, 817, 903, 931, 1029, 1075, 1225, 1425, 1505, 1715, 1995, 2107, 2451, 2793, 3225, 3325, 3675, 4085, 4515, 4655, 5145, 5719, 6321, 6517, 7525, 8575, 9975, 10535, 12255, 13965, 14749, 17157, 19551, 20425, 22575, 23275, 25725, 28595, 31605, 32585, 40033, 44247, 52675, 61275, 69825, 73745, 85785, 97755, 120099, 142975, 158025, 162925, 200165, 221235, 280231, 368725, 428925, 488775, 600495, 840693, 1000825, 1106175, 1401155, 3002475, 4203465, 7005775, 21017325]

約数ペア:

[(1, 21017325), (3, 7005775), (5, 4203465), (7, 3002475), (15, 1401155), (19, 1106175), (21, 1000825), (25, 840693), (35, 600495), (43, 488775), (49, 428925), (57, 368725), (75, 280231), (95, 221235), (105, 200165), (129, 162925), (133, 158025), (147, 142975), (175, 120099), (215, 97755), (245, 85785), (285, 73745), (301, 69825), (343, 61275), (399, 52675), (475, 44247), (525, 40033), (645, 32585), (665, 31605), (735, 28595), (817, 25725), (903, 23275), (931, 22575), (1029, 20425), (1075, 19551), (1225, 17157), (1425, 14749), (1505, 13965), (1715, 12255), (1995, 10535), (2107, 9975), (2451, 8575), (2793, 7525), (3225, 6517), (3325, 6321), (3675, 5719), (4085, 5145), (4515, 4655)]