1287108400

素因数分解:

$2^4\times 5^2\times {\mathrm{3217771}}^1$

素因数の和:3217789

約数の個数: 30

約数和(自身を含む): 3092278892

約数和(自身を除く): 1805170492

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 3217771, 6435542, 12871084, 16088855, 25742168, 32177710, 51484336, 64355420, 80444275, 128710840, 160888550, 257421680, 321777100, 643554200, 1287108400]

約数ペア:

[(1, 1287108400), (2, 643554200), (4, 321777100), (5, 257421680), (8, 160888550), (10, 128710840), (16, 80444275), (20, 64355420), (25, 51484336), (40, 32177710), (50, 25742168), (80, 16088855), (100, 12871084), (200, 6435542), (400, 3217771)]