78860000

素因数分解:

$2^5\times 5^4\times {\mathrm{3943}}^1$

素因数の和:3973

約数の個数: 60

約数和(自身を含む): 194056632

約数和(自身を除く): 115196632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 625, 800, 1000, 1250, 2000, 2500, 3943, 4000, 5000, 7886, 10000, 15772, 19715, 20000, 31544, 39430, 63088, 78860, 98575, 126176, 157720, 197150, 315440, 394300, 492875, 630880, 788600, 985750, 1577200, 1971500, 2464375, 3154400, 3943000, 4928750, 7886000, 9857500, 15772000, 19715000, 39430000, 78860000]

約数ペア:

[(1, 78860000), (2, 39430000), (4, 19715000), (5, 15772000), (8, 9857500), (10, 7886000), (16, 4928750), (20, 3943000), (25, 3154400), (32, 2464375), (40, 1971500), (50, 1577200), (80, 985750), (100, 788600), (125, 630880), (160, 492875), (200, 394300), (250, 315440), (400, 197150), (500, 157720), (625, 126176), (800, 98575), (1000, 78860), (1250, 63088), (2000, 39430), (2500, 31544), (3943, 20000), (4000, 19715), (5000, 15772), (7886, 10000)]