20081380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2467}}^1$

素因数の和:2524

約数の個数: 48

約数和(自身を含む): 47267136

約数和(自身を除く): 27185756

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 74, 110, 148, 185, 220, 370, 407, 740, 814, 1628, 2035, 2467, 4070, 4934, 8140, 9868, 12335, 24670, 27137, 49340, 54274, 91279, 108548, 135685, 182558, 271370, 365116, 456395, 542740, 912790, 1004069, 1825580, 2008138, 4016276, 5020345, 10040690, 20081380]

約数ペア:

[(1, 20081380), (2, 10040690), (4, 5020345), (5, 4016276), (10, 2008138), (11, 1825580), (20, 1004069), (22, 912790), (37, 542740), (44, 456395), (55, 365116), (74, 271370), (110, 182558), (148, 135685), (185, 108548), (220, 91279), (370, 54274), (407, 49340), (740, 27137), (814, 24670), (1628, 12335), (2035, 9868), (2467, 8140), (4070, 4934)]