28621520

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{5039}}^1$

素因数の和:5123

約数の個数: 40

約数和(自身を含む): 67495680

約数和(自身を除く): 38874160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5039, 5680, 10078, 20156, 25195, 40312, 50390, 80624, 100780, 201560, 357769, 403120, 715538, 1431076, 1788845, 2862152, 3577690, 5724304, 7155380, 14310760, 28621520]

約数ペア:

[(1, 28621520), (2, 14310760), (4, 7155380), (5, 5724304), (8, 3577690), (10, 2862152), (16, 1788845), (20, 1431076), (40, 715538), (71, 403120), (80, 357769), (142, 201560), (284, 100780), (355, 80624), (568, 50390), (710, 40312), (1136, 25195), (1420, 20156), (2840, 10078), (5039, 5680)]