20168704815

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1\times {\mathrm{271}}^1$

素因数の和:573

約数の個数: 128

約数和(自身を含む): 38353305600

約数和(自身を除く): 18184600785

約数列:

[1, 3, 5, 7, 15, 21, 35, 67, 71, 105, 149, 201, 213, 271, 335, 355, 447, 469, 497, 745, 813, 1005, 1043, 1065, 1355, 1407, 1491, 1897, 2235, 2345, 2485, 3129, 4065, 4757, 5215, 5691, 7035, 7455, 9485, 9983, 10579, 14271, 15645, 18157, 19241, 23785, 28455, 29949, 31737, 33299, 40379, 49915, 52895, 54471, 57723, 69881, 71355, 74053, 90785, 96205, 99897, 121137, 127099, 134687, 149745, 158685, 166495, 201895, 209643, 222159, 272355, 282653, 288615, 349405, 370265, 381297, 404061, 499485, 605685, 635495, 673435, 708793, 847959, 1048215, 1110795, 1289147, 1413265, 1906485, 2020305, 2126379, 2705393, 2866909, 3543965, 3867441, 4239795, 4961551, 6445735, 8116179, 8600727, 9024029, 10631895, 13526965, 14334545, 14884653, 18937751, 19337205, 20068363, 24807755, 27072087, 40580895, 43003635, 45120145, 56813253, 60205089, 74423265, 94688755, 100341815, 135360435, 192082903, 284066265, 301025445, 576248709, 960414515, 1344580321, 2881243545, 4033740963, 6722901605, 20168704815]

約数ペア:

[(1, 20168704815), (3, 6722901605), (5, 4033740963), (7, 2881243545), (15, 1344580321), (21, 960414515), (35, 576248709), (67, 301025445), (71, 284066265), (105, 192082903), (149, 135360435), (201, 100341815), (213, 94688755), (271, 74423265), (335, 60205089), (355, 56813253), (447, 45120145), (469, 43003635), (497, 40580895), (745, 27072087), (813, 24807755), (1005, 20068363), (1043, 19337205), (1065, 18937751), (1355, 14884653), (1407, 14334545), (1491, 13526965), (1897, 10631895), (2235, 9024029), (2345, 8600727), (2485, 8116179), (3129, 6445735), (4065, 4961551), (4757, 4239795), (5215, 3867441), (5691, 3543965), (7035, 2866909), (7455, 2705393), (9485, 2126379), (9983, 2020305), (10579, 1906485), (14271, 1413265), (15645, 1289147), (18157, 1110795), (19241, 1048215), (23785, 847959), (28455, 708793), (29949, 673435), (31737, 635495), (33299, 605685), (40379, 499485), (49915, 404061), (52895, 381297), (54471, 370265), (57723, 349405), (69881, 288615), (71355, 282653), (74053, 272355), (90785, 222159), (96205, 209643), (99897, 201895), (121137, 166495), (127099, 158685), (134687, 149745)]