19905500

素因数分解:

$2^2\times 5^3\times {\mathrm{41}}^1\times {\mathrm{971}}^1$

素因数の和:1031

約数の個数: 48

約数和(自身を含む): 44579808

約数和(自身を除く): 24674308

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 125, 164, 205, 250, 410, 500, 820, 971, 1025, 1942, 2050, 3884, 4100, 4855, 5125, 9710, 10250, 19420, 20500, 24275, 39811, 48550, 79622, 97100, 121375, 159244, 199055, 242750, 398110, 485500, 796220, 995275, 1990550, 3981100, 4976375, 9952750, 19905500]

約数ペア:

[(1, 19905500), (2, 9952750), (4, 4976375), (5, 3981100), (10, 1990550), (20, 995275), (25, 796220), (41, 485500), (50, 398110), (82, 242750), (100, 199055), (125, 159244), (164, 121375), (205, 97100), (250, 79622), (410, 48550), (500, 39811), (820, 24275), (971, 20500), (1025, 19420), (1942, 10250), (2050, 9710), (3884, 5125), (4100, 4855)]