28138775

素因数分解:

$5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{6991}}^1$

素因数の和:7031

約数の個数: 24

約数和(自身を含む): 41616384

約数和(自身を除く): 13477609

約数列:

[1, 5, 7, 23, 25, 35, 115, 161, 175, 575, 805, 4025, 6991, 34955, 48937, 160793, 174775, 244685, 803965, 1125551, 1223425, 4019825, 5627755, 28138775]

約数ペア:

[(1, 28138775), (5, 5627755), (7, 4019825), (23, 1223425), (25, 1125551), (35, 803965), (115, 244685), (161, 174775), (175, 160793), (575, 48937), (805, 34955), (4025, 6991)]