77872400

素因数分解:

$2^4\times 5^2\times {\mathrm{194681}}^1$

素因数の和:194699

約数の個数: 30

約数和(自身を含む): 187089402

約数和(自身を除く): 109217002

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 194681, 389362, 778724, 973405, 1557448, 1946810, 3114896, 3893620, 4867025, 7787240, 9734050, 15574480, 19468100, 38936200, 77872400]

約数ペア:

[(1, 77872400), (2, 38936200), (4, 19468100), (5, 15574480), (8, 9734050), (10, 7787240), (16, 4867025), (20, 3893620), (25, 3114896), (40, 1946810), (50, 1557448), (80, 973405), (100, 778724), (200, 389362), (400, 194681)]