3925000

素因数分解:

$2^3\times 5^5\times {\mathrm{157}}^1$

素因数の和:188

約数の個数: 48

約数和(自身を含む): 9257220

約数和(自身を除く): 5332220

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 157, 200, 250, 314, 500, 625, 628, 785, 1000, 1250, 1256, 1570, 2500, 3125, 3140, 3925, 5000, 6250, 6280, 7850, 12500, 15700, 19625, 25000, 31400, 39250, 78500, 98125, 157000, 196250, 392500, 490625, 785000, 981250, 1962500, 3925000]

約数ペア:

[(1, 3925000), (2, 1962500), (4, 981250), (5, 785000), (8, 490625), (10, 392500), (20, 196250), (25, 157000), (40, 98125), (50, 78500), (100, 39250), (125, 31400), (157, 25000), (200, 19625), (250, 15700), (314, 12500), (500, 7850), (625, 6280), (628, 6250), (785, 5000), (1000, 3925), (1250, 3140), (1256, 3125), (1570, 2500)]