80009980

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^2\times {\mathrm{1811}}^1$

素因数の和:1914

約数の個数: 36

約数和(自身を含む): 171766728

約数和(自身を除く): 91756748

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 1811, 2209, 3622, 4418, 7244, 8836, 9055, 11045, 18110, 22090, 36220, 44180, 85117, 170234, 340468, 425585, 851170, 1702340, 4000499, 8000998, 16001996, 20002495, 40004990, 80009980]

約数ペア:

[(1, 80009980), (2, 40004990), (4, 20002495), (5, 16001996), (10, 8000998), (20, 4000499), (47, 1702340), (94, 851170), (188, 425585), (235, 340468), (470, 170234), (940, 85117), (1811, 44180), (2209, 36220), (3622, 22090), (4418, 18110), (7244, 11045), (8836, 9055)]