67840720

素因数分解:

$2^4\times 5^1\times {\mathrm{211}}^1\times {\mathrm{4019}}^1$

素因数の和:4243

約数の個数: 40

約数和(自身を含む): 158516640

約数和(自身を除く): 90675920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 211, 422, 844, 1055, 1688, 2110, 3376, 4019, 4220, 8038, 8440, 16076, 16880, 20095, 32152, 40190, 64304, 80380, 160760, 321520, 848009, 1696018, 3392036, 4240045, 6784072, 8480090, 13568144, 16960180, 33920360, 67840720]

約数ペア:

[(1, 67840720), (2, 33920360), (4, 16960180), (5, 13568144), (8, 8480090), (10, 6784072), (16, 4240045), (20, 3392036), (40, 1696018), (80, 848009), (211, 321520), (422, 160760), (844, 80380), (1055, 64304), (1688, 40190), (2110, 32152), (3376, 20095), (4019, 16880), (4220, 16076), (8038, 8440)]