21537754

素因数分解:

$2^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{269}}^1$

素因数の和:347

約数の個数: 48

約数和(自身を含む): 40629600

約数和(自身を除く): 19091846

約数列:

[1, 2, 7, 14, 19, 38, 43, 49, 86, 98, 133, 266, 269, 301, 538, 602, 817, 931, 1634, 1862, 1883, 2107, 3766, 4214, 5111, 5719, 10222, 11438, 11567, 13181, 23134, 26362, 35777, 40033, 71554, 80066, 80969, 161938, 219773, 250439, 439546, 500878, 566783, 1133566, 1538411, 3076822, 10768877, 21537754]

約数ペア:

[(1, 21537754), (2, 10768877), (7, 3076822), (14, 1538411), (19, 1133566), (38, 566783), (43, 500878), (49, 439546), (86, 250439), (98, 219773), (133, 161938), (266, 80969), (269, 80066), (301, 71554), (538, 40033), (602, 35777), (817, 26362), (931, 23134), (1634, 13181), (1862, 11567), (1883, 11438), (2107, 10222), (3766, 5719), (4214, 5111)]