21104288

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{337}}^1$

素因数の和:469

約数の個数: 48

約数和(自身を含む): 44291520

約数和(自身を除く): 23187232

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 103, 152, 206, 304, 337, 412, 608, 674, 824, 1348, 1648, 1957, 2696, 3296, 3914, 5392, 6403, 7828, 10784, 12806, 15656, 25612, 31312, 34711, 51224, 62624, 69422, 102448, 138844, 204896, 277688, 555376, 659509, 1110752, 1319018, 2638036, 5276072, 10552144, 21104288]

約数ペア:

[(1, 21104288), (2, 10552144), (4, 5276072), (8, 2638036), (16, 1319018), (19, 1110752), (32, 659509), (38, 555376), (76, 277688), (103, 204896), (152, 138844), (206, 102448), (304, 69422), (337, 62624), (412, 51224), (608, 34711), (674, 31312), (824, 25612), (1348, 15656), (1648, 12806), (1957, 10784), (2696, 7828), (3296, 6403), (3914, 5392)]