15970000

素因数分解:

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

素因数の和:1625

約数の個数: 50

約数和(自身を含む): 38689178

約数和(自身を除く): 22719178

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 1597, 2000, 2500, 3194, 5000, 6388, 7985, 10000, 12776, 15970, 25552, 31940, 39925, 63880, 79850, 127760, 159700, 199625, 319400, 399250, 638800, 798500, 998125, 1597000, 1996250, 3194000, 3992500, 7985000, 15970000]

約数ペア:

[(1, 15970000), (2, 7985000), (4, 3992500), (5, 3194000), (8, 1996250), (10, 1597000), (16, 998125), (20, 798500), (25, 638800), (40, 399250), (50, 319400), (80, 199625), (100, 159700), (125, 127760), (200, 79850), (250, 63880), (400, 39925), (500, 31940), (625, 25552), (1000, 15970), (1250, 12776), (1597, 10000), (2000, 7985), (2500, 6388), (3194, 5000)]