328400

素因数分解:

$2^4\times 5^2\times {\mathrm{821}}^1$

素因数の和:839

約数の個数: 30

約数和(自身を含む): 789942

約数和(自身を除く): 461542

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 821, 1642, 3284, 4105, 6568, 8210, 13136, 16420, 20525, 32840, 41050, 65680, 82100, 164200, 328400]

約数ペア:

[(1, 328400), (2, 164200), (4, 82100), (5, 65680), (8, 41050), (10, 32840), (16, 20525), (20, 16420), (25, 13136), (40, 8210), (50, 6568), (80, 4105), (100, 3284), (200, 1642), (400, 821)]