81994225

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{241}}^1\times {\mathrm{439}}^1$

素因数の和:721

約数の個数: 24

約数和(自身を含む): 105628160

約数和(自身を除く): 23633935

約数列:

[1, 5, 25, 31, 155, 241, 439, 775, 1205, 2195, 6025, 7471, 10975, 13609, 37355, 68045, 105799, 186775, 340225, 528995, 2644975, 3279769, 16398845, 81994225]

約数ペア:

[(1, 81994225), (5, 16398845), (25, 3279769), (31, 2644975), (155, 528995), (241, 340225), (439, 186775), (775, 105799), (1205, 68045), (2195, 37355), (6025, 13609), (7471, 10975)]