20110000

素因数分解:

$2^4\times 5^4\times {\mathrm{2011}}^1$

素因数の和:2039

約数の個数: 50

約数和(自身を含む): 48712532

約数和(自身を除く): 28602532

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 2000, 2011, 2500, 4022, 5000, 8044, 10000, 10055, 16088, 20110, 32176, 40220, 50275, 80440, 100550, 160880, 201100, 251375, 402200, 502750, 804400, 1005500, 1256875, 2011000, 2513750, 4022000, 5027500, 10055000, 20110000]

約数ペア:

[(1, 20110000), (2, 10055000), (4, 5027500), (5, 4022000), (8, 2513750), (10, 2011000), (16, 1256875), (20, 1005500), (25, 804400), (40, 502750), (50, 402200), (80, 251375), (100, 201100), (125, 160880), (200, 100550), (250, 80440), (400, 50275), (500, 40220), (625, 32176), (1000, 20110), (1250, 16088), (2000, 10055), (2011, 10000), (2500, 8044), (4022, 5000)]