80705000

素因数分解:

$2^3\times 5^4\times {\mathrm{16141}}^1$

素因数の和:16167

約数の個数: 40

約数和(自身を含む): 189103530

約数和(自身を除く): 108398530

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 2500, 5000, 16141, 32282, 64564, 80705, 129128, 161410, 322820, 403525, 645640, 807050, 1614100, 2017625, 3228200, 4035250, 8070500, 10088125, 16141000, 20176250, 40352500, 80705000]

約数ペア:

[(1, 80705000), (2, 40352500), (4, 20176250), (5, 16141000), (8, 10088125), (10, 8070500), (20, 4035250), (25, 3228200), (40, 2017625), (50, 1614100), (100, 807050), (125, 645640), (200, 403525), (250, 322820), (500, 161410), (625, 129128), (1000, 80705), (1250, 64564), (2500, 32282), (5000, 16141)]