28639838

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{1451}}^1$

素因数の和:1663

約数の個数: 16

約数和(自身を含む): 43908480

約数和(自身を除く): 15268642

約数列:

[1, 2, 71, 139, 142, 278, 1451, 2902, 9869, 19738, 103021, 201689, 206042, 403378, 14319919, 28639838]

約数ペア:

[(1, 28639838), (2, 14319919), (71, 403378), (139, 206042), (142, 201689), (278, 103021), (1451, 19738), (2902, 9869)]