18138939

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{269}}^1$

素因数の和:324

約数の個数: 48

約数和(自身を含む): 31622400

約数和(自身を除く): 13483461

約数列:

[1, 3, 7, 13, 19, 21, 39, 57, 91, 133, 169, 247, 269, 273, 399, 507, 741, 807, 1183, 1729, 1883, 3211, 3497, 3549, 5111, 5187, 5649, 9633, 10491, 15333, 22477, 24479, 35777, 45461, 66443, 67431, 73437, 107331, 136383, 199329, 318227, 465101, 863759, 954681, 1395303, 2591277, 6046313, 18138939]

約数ペア:

[(1, 18138939), (3, 6046313), (7, 2591277), (13, 1395303), (19, 954681), (21, 863759), (39, 465101), (57, 318227), (91, 199329), (133, 136383), (169, 107331), (247, 73437), (269, 67431), (273, 66443), (399, 45461), (507, 35777), (741, 24479), (807, 22477), (1183, 15333), (1729, 10491), (1883, 9633), (3211, 5649), (3497, 5187), (3549, 5111)]