280434128

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{20123}}^1$

素因数の和:20211

約数の個数: 40

約数和(自身を含む): 593899488

約数和(自身を除く): 313465360

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 67, 104, 134, 208, 268, 536, 871, 1072, 1742, 3484, 6968, 13936, 20123, 40246, 80492, 160984, 261599, 321968, 523198, 1046396, 1348241, 2092792, 2696482, 4185584, 5392964, 10785928, 17527133, 21571856, 35054266, 70108532, 140217064, 280434128]

約数ペア:

[(1, 280434128), (2, 140217064), (4, 70108532), (8, 35054266), (13, 21571856), (16, 17527133), (26, 10785928), (52, 5392964), (67, 4185584), (104, 2696482), (134, 2092792), (208, 1348241), (268, 1046396), (536, 523198), (871, 321968), (1072, 261599), (1742, 160984), (3484, 80492), (6968, 40246), (13936, 20123)]