9965000

素因数分解:

$2^3\times 5^4\times {\mathrm{1993}}^1$

素因数の和:2019

約数の個数: 40

約数和(自身を含む): 23359710

約数和(自身を除く): 13394710

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 1993, 2500, 3986, 5000, 7972, 9965, 15944, 19930, 39860, 49825, 79720, 99650, 199300, 249125, 398600, 498250, 996500, 1245625, 1993000, 2491250, 4982500, 9965000]

約数ペア:

[(1, 9965000), (2, 4982500), (4, 2491250), (5, 1993000), (8, 1245625), (10, 996500), (20, 498250), (25, 398600), (40, 249125), (50, 199300), (100, 99650), (125, 79720), (200, 49825), (250, 39860), (500, 19930), (625, 15944), (1000, 9965), (1250, 7972), (1993, 5000), (2500, 3986)]