19911650

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{883}}^1$

素因数の和:947

約数の個数: 48

約数和(自身を含む): 41434848

約数和(自身を除く): 21523198

約数列:

[1, 2, 5, 10, 11, 22, 25, 41, 50, 55, 82, 110, 205, 275, 410, 451, 550, 883, 902, 1025, 1766, 2050, 2255, 4415, 4510, 8830, 9713, 11275, 19426, 22075, 22550, 36203, 44150, 48565, 72406, 97130, 181015, 242825, 362030, 398233, 485650, 796466, 905075, 1810150, 1991165, 3982330, 9955825, 19911650]

約数ペア:

[(1, 19911650), (2, 9955825), (5, 3982330), (10, 1991165), (11, 1810150), (22, 905075), (25, 796466), (41, 485650), (50, 398233), (55, 362030), (82, 242825), (110, 181015), (205, 97130), (275, 72406), (410, 48565), (451, 44150), (550, 36203), (883, 22550), (902, 22075), (1025, 19426), (1766, 11275), (2050, 9713), (2255, 8830), (4415, 4510)]