78372400

素因数分解:

$2^4\times 5^2\times {\mathrm{195931}}^1$

素因数の和:195949

約数の個数: 30

約数和(自身を含む): 188290652

約数和(自身を除く): 109918252

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 195931, 391862, 783724, 979655, 1567448, 1959310, 3134896, 3918620, 4898275, 7837240, 9796550, 15674480, 19593100, 39186200, 78372400]

約数ペア:

[(1, 78372400), (2, 39186200), (4, 19593100), (5, 15674480), (8, 9796550), (10, 7837240), (16, 4898275), (20, 3918620), (25, 3134896), (40, 1959310), (50, 1567448), (80, 979655), (100, 783724), (200, 391862), (400, 195931)]