78500000

素因数分解:

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

素因数の和:197

約数の個数: 84

約数和(自身を含む): 194411574

約数和(自身を除く): 115911574

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 157, 160, 200, 250, 314, 400, 500, 625, 628, 785, 800, 1000, 1250, 1256, 1570, 2000, 2500, 2512, 3125, 3140, 3925, 4000, 5000, 5024, 6250, 6280, 7850, 10000, 12500, 12560, 15625, 15700, 19625, 20000, 25000, 25120, 31250, 31400, 39250, 50000, 62500, 62800, 78500, 98125, 100000, 125000, 125600, 157000, 196250, 250000, 314000, 392500, 490625, 500000, 628000, 785000, 981250, 1570000, 1962500, 2453125, 3140000, 3925000, 4906250, 7850000, 9812500, 15700000, 19625000, 39250000, 78500000]

約数ペア:

[(1, 78500000), (2, 39250000), (4, 19625000), (5, 15700000), (8, 9812500), (10, 7850000), (16, 4906250), (20, 3925000), (25, 3140000), (32, 2453125), (40, 1962500), (50, 1570000), (80, 981250), (100, 785000), (125, 628000), (157, 500000), (160, 490625), (200, 392500), (250, 314000), (314, 250000), (400, 196250), (500, 157000), (625, 125600), (628, 125000), (785, 100000), (800, 98125), (1000, 78500), (1250, 62800), (1256, 62500), (1570, 50000), (2000, 39250), (2500, 31400), (2512, 31250), (3125, 25120), (3140, 25000), (3925, 20000), (4000, 19625), (5000, 15700), (5024, 15625), (6250, 12560), (6280, 12500), (7850, 10000)]