81009800

素因数分解:

$2^3\times 5^2\times {\mathrm{405049}}^1$

素因数の和:405065

約数の個数: 24

約数和(自身を含む): 188348250

約数和(自身を除く): 107338450

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 405049, 810098, 1620196, 2025245, 3240392, 4050490, 8100980, 10126225, 16201960, 20252450, 40504900, 81009800]

約数ペア:

[(1, 81009800), (2, 40504900), (4, 20252450), (5, 16201960), (8, 10126225), (10, 8100980), (20, 4050490), (25, 3240392), (40, 2025245), (50, 1620196), (100, 810098), (200, 405049)]