18937165

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{239}}^1$

素因数の和:333

約数の個数: 32

約数和(自身を含む): 26127360

約数和(自身を除く): 7190195

約数列:

[1, 5, 13, 23, 53, 65, 115, 239, 265, 299, 689, 1195, 1219, 1495, 3107, 3445, 5497, 6095, 12667, 15535, 15847, 27485, 63335, 71461, 79235, 164671, 291341, 357305, 823355, 1456705, 3787433, 18937165]

約数ペア:

[(1, 18937165), (5, 3787433), (13, 1456705), (23, 823355), (53, 357305), (65, 291341), (115, 164671), (239, 79235), (265, 71461), (299, 63335), (689, 27485), (1195, 15847), (1219, 15535), (1495, 12667), (3107, 6095), (3445, 5497)]