78847280

素因数分解:

$2^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{5003}}^1$

素因数の和:5213

約数の個数: 40

約数和(自身を含む): 184287312

約数和(自身を除く): 105440032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197, 394, 788, 985, 1576, 1970, 3152, 3940, 5003, 7880, 10006, 15760, 20012, 25015, 40024, 50030, 80048, 100060, 200120, 400240, 985591, 1971182, 3942364, 4927955, 7884728, 9855910, 15769456, 19711820, 39423640, 78847280]

約数ペア:

[(1, 78847280), (2, 39423640), (4, 19711820), (5, 15769456), (8, 9855910), (10, 7884728), (16, 4927955), (20, 3942364), (40, 1971182), (80, 985591), (197, 400240), (394, 200120), (788, 100060), (985, 80048), (1576, 50030), (1970, 40024), (3152, 25015), (3940, 20012), (5003, 15760), (7880, 10006)]