3125000

素因数分解:

$2^3\times 5^8$

素因数の和:46

約数の個数: 36

約数和(自身を含む): 7324215

約数和(自身を除く): 4199215

約数列:

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

約数ペア:

[(1, 3125000), (2, 1562500), (4, 781250), (5, 625000), (8, 390625), (10, 312500), (20, 156250), (25, 125000), (40, 78125), (50, 62500), (100, 31250), (125, 25000), (200, 15625), (250, 12500), (500, 6250), (625, 5000), (1000, 3125), (1250, 2500)]