20325123

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{83}}^1$

素因数の和:145

約数の個数: 72

約数和(自身を含む): 38368512

約数和(自身を除く): 18043389

約数列:

[1, 3, 7, 9, 13, 21, 23, 39, 63, 69, 83, 91, 117, 161, 169, 207, 249, 273, 299, 483, 507, 581, 747, 819, 897, 1079, 1183, 1449, 1521, 1743, 1909, 2093, 2691, 3237, 3549, 3887, 5229, 5727, 6279, 7553, 9711, 10647, 11661, 13363, 14027, 17181, 18837, 22659, 24817, 27209, 34983, 40089, 42081, 67977, 74451, 81627, 98189, 120267, 126243, 173719, 223353, 244881, 294567, 322621, 521157, 883701, 967863, 1563471, 2258347, 2903589, 6775041, 20325123]

約数ペア:

[(1, 20325123), (3, 6775041), (7, 2903589), (9, 2258347), (13, 1563471), (21, 967863), (23, 883701), (39, 521157), (63, 322621), (69, 294567), (83, 244881), (91, 223353), (117, 173719), (161, 126243), (169, 120267), (207, 98189), (249, 81627), (273, 74451), (299, 67977), (483, 42081), (507, 40089), (581, 34983), (747, 27209), (819, 24817), (897, 22659), (1079, 18837), (1183, 17181), (1449, 14027), (1521, 13363), (1743, 11661), (1909, 10647), (2093, 9711), (2691, 7553), (3237, 6279), (3549, 5727), (3887, 5229)]