205291281

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1\times {\mathrm{1259}}^1$

素因数の和:1425

約数の個数: 32

約数和(自身を含む): 305665920

約数和(自身を除く): 100374639

約数列:

[1, 3, 13, 37, 39, 111, 113, 339, 481, 1259, 1443, 1469, 3777, 4181, 4407, 12543, 16367, 46583, 49101, 54353, 139749, 142267, 163059, 426801, 605579, 1816737, 1849471, 5263879, 5548413, 15791637, 68430427, 205291281]

約数ペア:

[(1, 205291281), (3, 68430427), (13, 15791637), (37, 5548413), (39, 5263879), (111, 1849471), (113, 1816737), (339, 605579), (481, 426801), (1259, 163059), (1443, 142267), (1469, 139749), (3777, 54353), (4181, 49101), (4407, 46583), (12543, 16367)]