12970000

素因数分解:

$2^4\times 5^4\times {\mathrm{1297}}^1$

素因数の和:1325

約数の個数: 50

約数和(自身を含む): 31425878

約数和(自身を除く): 18455878

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 1297, 2000, 2500, 2594, 5000, 5188, 6485, 10000, 10376, 12970, 20752, 25940, 32425, 51880, 64850, 103760, 129700, 162125, 259400, 324250, 518800, 648500, 810625, 1297000, 1621250, 2594000, 3242500, 6485000, 12970000]

約数ペア:

[(1, 12970000), (2, 6485000), (4, 3242500), (5, 2594000), (8, 1621250), (10, 1297000), (16, 810625), (20, 648500), (25, 518800), (40, 324250), (50, 259400), (80, 162125), (100, 129700), (125, 103760), (200, 64850), (250, 51880), (400, 32425), (500, 25940), (625, 20752), (1000, 12970), (1250, 10376), (1297, 10000), (2000, 6485), (2500, 5188), (2594, 5000)]