28156825

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{547}}^1$

素因数の和:657

約数の個数: 24

約数和(自身を含む): 36694080

約数和(自身を除く): 8537255

約数列:

[1, 5, 25, 29, 71, 145, 355, 547, 725, 1775, 2059, 2735, 10295, 13675, 15863, 38837, 51475, 79315, 194185, 396575, 970925, 1126273, 5631365, 28156825]

約数ペア:

[(1, 28156825), (5, 5631365), (25, 1126273), (29, 970925), (71, 396575), (145, 194185), (355, 79315), (547, 51475), (725, 38837), (1775, 15863), (2059, 13675), (2735, 10295)]