1945000

素因数分解:

$2^3\times 5^4\times {\mathrm{389}}^1$

素因数の和:415

約数の個数: 40

約数和(自身を含む): 4568850

約数和(自身を除く): 2623850

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 389, 500, 625, 778, 1000, 1250, 1556, 1945, 2500, 3112, 3890, 5000, 7780, 9725, 15560, 19450, 38900, 48625, 77800, 97250, 194500, 243125, 389000, 486250, 972500, 1945000]

約数ペア:

[(1, 1945000), (2, 972500), (4, 486250), (5, 389000), (8, 243125), (10, 194500), (20, 97250), (25, 77800), (40, 48625), (50, 38900), (100, 19450), (125, 15560), (200, 9725), (250, 7780), (389, 5000), (500, 3890), (625, 3112), (778, 2500), (1000, 1945), (1250, 1556)]