81528215

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{16487}}^1$

素因数の和:16558

約数の個数: 16

約数和(自身を含む): 104467968

約数和(自身を除く): 22939753

約数列:

[1, 5, 23, 43, 115, 215, 989, 4945, 16487, 82435, 379201, 708941, 1896005, 3544705, 16305643, 81528215]

約数ペア:

[(1, 81528215), (5, 16305643), (23, 3544705), (43, 1896005), (115, 708941), (215, 379201), (989, 82435), (4945, 16487)]