21878576

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{911}}^1$

素因数の和:1017

約数の個数: 40

約数和(自身を含む): 45235200

約数和(自身を除く): 23356624

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 79, 152, 158, 304, 316, 632, 911, 1264, 1501, 1822, 3002, 3644, 6004, 7288, 12008, 14576, 17309, 24016, 34618, 69236, 71969, 138472, 143938, 276944, 287876, 575752, 1151504, 1367411, 2734822, 5469644, 10939288, 21878576]

約数ペア:

[(1, 21878576), (2, 10939288), (4, 5469644), (8, 2734822), (16, 1367411), (19, 1151504), (38, 575752), (76, 287876), (79, 276944), (152, 143938), (158, 138472), (304, 71969), (316, 69236), (632, 34618), (911, 24016), (1264, 17309), (1501, 14576), (1822, 12008), (3002, 7288), (3644, 6004)]