6250000

素因数分解:

$2^4\times 5^8$

素因数の和:48

約数の個数: 45

約数和(自身を含む): 15136711

約数和(自身を除く): 8886711

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 2000, 2500, 3125, 5000, 6250, 10000, 12500, 15625, 25000, 31250, 50000, 62500, 78125, 125000, 156250, 250000, 312500, 390625, 625000, 781250, 1250000, 1562500, 3125000, 6250000]

約数ペア:

[(1, 6250000), (2, 3125000), (4, 1562500), (5, 1250000), (8, 781250), (10, 625000), (16, 390625), (20, 312500), (25, 250000), (40, 156250), (50, 125000), (80, 78125), (100, 62500), (125, 50000), (200, 31250), (250, 25000), (400, 15625), (500, 12500), (625, 10000), (1000, 6250), (1250, 5000), (2000, 3125)]