54545720

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{2063}}^1$

素因数の和:2735

約数の個数: 32

約数和(自身を含む): 122973120

約数和(自身を除く): 68427400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 1322, 2063, 2644, 3305, 4126, 5288, 6610, 8252, 10315, 13220, 16504, 20630, 26440, 41260, 82520, 1363643, 2727286, 5454572, 6818215, 10909144, 13636430, 27272860, 54545720]

約数ペア:

[(1, 54545720), (2, 27272860), (4, 13636430), (5, 10909144), (8, 6818215), (10, 5454572), (20, 2727286), (40, 1363643), (661, 82520), (1322, 41260), (2063, 26440), (2644, 20630), (3305, 16504), (4126, 13220), (5288, 10315), (6610, 8252)]