81741375

素因数分解:

$3^2\times 5^3\times {\mathrm{113}}^1\times {\mathrm{643}}^1$

素因数の和:777

約数の個数: 48

約数和(自身を含む): 148887648

約数和(自身を除く): 67146273

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 113, 125, 225, 339, 375, 565, 643, 1017, 1125, 1695, 1929, 2825, 3215, 5085, 5787, 8475, 9645, 14125, 16075, 25425, 28935, 42375, 48225, 72659, 80375, 127125, 144675, 217977, 241125, 363295, 653931, 723375, 1089885, 1816475, 3269655, 5449425, 9082375, 16348275, 27247125, 81741375]

約数ペア:

[(1, 81741375), (3, 27247125), (5, 16348275), (9, 9082375), (15, 5449425), (25, 3269655), (45, 1816475), (75, 1089885), (113, 723375), (125, 653931), (225, 363295), (339, 241125), (375, 217977), (565, 144675), (643, 127125), (1017, 80375), (1125, 72659), (1695, 48225), (1929, 42375), (2825, 28935), (3215, 25425), (5085, 16075), (5787, 14125), (8475, 9645)]