20860977

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:237

約数の個数: 32

約数和(自身を含む): 30412800

約数和(自身を除く): 9551823

約数列:

[1, 3, 23, 43, 69, 79, 89, 129, 237, 267, 989, 1817, 2047, 2967, 3397, 3827, 5451, 6141, 7031, 10191, 11481, 21093, 78131, 88021, 161713, 234393, 264063, 302333, 485139, 906999, 6953659, 20860977]

約数ペア:

[(1, 20860977), (3, 6953659), (23, 906999), (43, 485139), (69, 302333), (79, 264063), (89, 234393), (129, 161713), (237, 88021), (267, 78131), (989, 21093), (1817, 11481), (2047, 10191), (2967, 7031), (3397, 6141), (3827, 5451)]