3890000

素因数分解:

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

素因数の和:417

約数の個数: 50

約数和(自身を含む): 9442290

約数和(自身を除く): 5552290

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 389, 400, 500, 625, 778, 1000, 1250, 1556, 1945, 2000, 2500, 3112, 3890, 5000, 6224, 7780, 9725, 10000, 15560, 19450, 31120, 38900, 48625, 77800, 97250, 155600, 194500, 243125, 389000, 486250, 778000, 972500, 1945000, 3890000]

約数ペア:

[(1, 3890000), (2, 1945000), (4, 972500), (5, 778000), (8, 486250), (10, 389000), (16, 243125), (20, 194500), (25, 155600), (40, 97250), (50, 77800), (80, 48625), (100, 38900), (125, 31120), (200, 19450), (250, 15560), (389, 10000), (400, 9725), (500, 7780), (625, 6224), (778, 5000), (1000, 3890), (1250, 3112), (1556, 2500), (1945, 2000)]