12921909

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{331}}^1$

素因数の和:378

約数の個数: 48

約数和(自身を含む): 23330304

約数和(自身を除く): 10408395

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 77, 91, 143, 169, 231, 273, 331, 429, 507, 993, 1001, 1183, 1859, 2317, 3003, 3549, 3641, 4303, 5577, 6951, 10923, 12909, 13013, 25487, 30121, 39039, 47333, 55939, 76461, 90363, 141999, 167817, 331331, 391573, 615329, 993993, 1174719, 1845987, 4307303, 12921909]

約数ペア:

[(1, 12921909), (3, 4307303), (7, 1845987), (11, 1174719), (13, 993993), (21, 615329), (33, 391573), (39, 331331), (77, 167817), (91, 141999), (143, 90363), (169, 76461), (231, 55939), (273, 47333), (331, 39039), (429, 30121), (507, 25487), (993, 13013), (1001, 12909), (1183, 10923), (1859, 6951), (2317, 5577), (3003, 4303), (3549, 3641)]