80812400

素因数分解:

$2^4\times 5^2\times {\mathrm{202031}}^1$

素因数の和:202049

約数の個数: 30

約数和(自身を含む): 194152752

約数和(自身を除く): 113340352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 202031, 404062, 808124, 1010155, 1616248, 2020310, 3232496, 4040620, 5050775, 8081240, 10101550, 16162480, 20203100, 40406200, 80812400]

約数ペア:

[(1, 80812400), (2, 40406200), (4, 20203100), (5, 16162480), (8, 10101550), (10, 8081240), (16, 5050775), (20, 4040620), (25, 3232496), (40, 2020310), (50, 1616248), (80, 1010155), (100, 808124), (200, 404062), (400, 202031)]