20579585

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{199}}^1$

素因数の和:297

約数の個数: 32

約数和(自身を含む): 28089600

約数和(自身を除く): 7510015

約数列:

[1, 5, 13, 37, 43, 65, 185, 199, 215, 481, 559, 995, 1591, 2405, 2587, 2795, 7363, 7955, 8557, 12935, 20683, 36815, 42785, 95719, 103415, 111241, 316609, 478595, 556205, 1583045, 4115917, 20579585]

約数ペア:

[(1, 20579585), (5, 4115917), (13, 1583045), (37, 556205), (43, 478595), (65, 316609), (185, 111241), (199, 103415), (215, 95719), (481, 42785), (559, 36815), (995, 20683), (1591, 12935), (2405, 8557), (2587, 7955), (2795, 7363)]