79720000

素因数分解:

$2^6\times 5^4\times {\mathrm{1993}}^1$

素因数の和:2025

約数の個数: 70

約数和(自身を含む): 197778878

約数和(自身を除く): 118058878

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 160, 200, 250, 320, 400, 500, 625, 800, 1000, 1250, 1600, 1993, 2000, 2500, 3986, 4000, 5000, 7972, 8000, 9965, 10000, 15944, 19930, 20000, 31888, 39860, 40000, 49825, 63776, 79720, 99650, 127552, 159440, 199300, 249125, 318880, 398600, 498250, 637760, 797200, 996500, 1245625, 1594400, 1993000, 2491250, 3188800, 3986000, 4982500, 7972000, 9965000, 15944000, 19930000, 39860000, 79720000]

約数ペア:

[(1, 79720000), (2, 39860000), (4, 19930000), (5, 15944000), (8, 9965000), (10, 7972000), (16, 4982500), (20, 3986000), (25, 3188800), (32, 2491250), (40, 1993000), (50, 1594400), (64, 1245625), (80, 996500), (100, 797200), (125, 637760), (160, 498250), (200, 398600), (250, 318880), (320, 249125), (400, 199300), (500, 159440), (625, 127552), (800, 99650), (1000, 79720), (1250, 63776), (1600, 49825), (1993, 40000), (2000, 39860), (2500, 31888), (3986, 20000), (4000, 19930), (5000, 15944), (7972, 10000), (8000, 9965)]