19625000

素因数分解:

$2^3\times 5^6\times {\mathrm{157}}^1$

素因数の和:193

約数の個数: 56

約数和(自身を含む): 46288470

約数和(自身を除く): 26663470

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, 15625, 15700, 19625, 25000, 31250, 31400, 39250, 62500, 78500, 98125, 125000, 157000, 196250, 392500, 490625, 785000, 981250, 1962500, 2453125, 3925000, 4906250, 9812500, 19625000]

約数ペア:

[(1, 19625000), (2, 9812500), (4, 4906250), (5, 3925000), (8, 2453125), (10, 1962500), (20, 981250), (25, 785000), (40, 490625), (50, 392500), (100, 196250), (125, 157000), (157, 125000), (200, 98125), (250, 78500), (314, 62500), (500, 39250), (625, 31400), (628, 31250), (785, 25000), (1000, 19625), (1250, 15700), (1256, 15625), (1570, 12500), (2500, 7850), (3125, 6280), (3140, 6250), (3925, 5000)]