18935553

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{499}}^1$

素因数の和:661

約数の個数: 32

約数和(自身を含む): 31360000

約数和(自身を除く): 12424447

約数列:

[1, 3, 7, 13, 21, 39, 91, 139, 273, 417, 499, 973, 1497, 1807, 2919, 3493, 5421, 6487, 10479, 12649, 19461, 37947, 45409, 69361, 136227, 208083, 485527, 901693, 1456581, 2705079, 6311851, 18935553]

約数ペア:

[(1, 18935553), (3, 6311851), (7, 2705079), (13, 1456581), (21, 901693), (39, 485527), (91, 208083), (139, 136227), (273, 69361), (417, 45409), (499, 37947), (973, 19461), (1497, 12649), (1807, 10479), (2919, 6487), (3493, 5421)]