19930000

素因数分解:

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

素因数の和:2021

約数の個数: 50

約数和(自身を含む): 48276734

約数和(自身を除く): 28346734

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 1993, 2000, 2500, 3986, 5000, 7972, 9965, 10000, 15944, 19930, 31888, 39860, 49825, 79720, 99650, 159440, 199300, 249125, 398600, 498250, 797200, 996500, 1245625, 1993000, 2491250, 3986000, 4982500, 9965000, 19930000]

約数ペア:

[(1, 19930000), (2, 9965000), (4, 4982500), (5, 3986000), (8, 2491250), (10, 1993000), (16, 1245625), (20, 996500), (25, 797200), (40, 498250), (50, 398600), (80, 249125), (100, 199300), (125, 159440), (200, 99650), (250, 79720), (400, 49825), (500, 39860), (625, 31888), (1000, 19930), (1250, 15944), (1993, 10000), (2000, 9965), (2500, 7972), (3986, 5000)]