7985000

素因数分解:

$2^3\times 5^4\times {\mathrm{1597}}^1$

素因数の和:1623

約数の個数: 40

約数和(自身を含む): 18720570

約数和(自身を除く): 10735570

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 1597, 2500, 3194, 5000, 6388, 7985, 12776, 15970, 31940, 39925, 63880, 79850, 159700, 199625, 319400, 399250, 798500, 998125, 1597000, 1996250, 3992500, 7985000]

約数ペア:

[(1, 7985000), (2, 3992500), (4, 1996250), (5, 1597000), (8, 998125), (10, 798500), (20, 399250), (25, 319400), (40, 199625), (50, 159700), (100, 79850), (125, 63880), (200, 39925), (250, 31940), (500, 15970), (625, 12776), (1000, 7985), (1250, 6388), (1597, 5000), (2500, 3194)]