18986795

素因数分解:

$5^1\times {\mathrm{19}}^2\times {\mathrm{67}}^1\times {\mathrm{157}}^1$

素因数の和:267

約数の個数: 24

約数和(自身を含む): 24560784

約数和(自身を除く): 5573989

約数列:

[1, 5, 19, 67, 95, 157, 335, 361, 785, 1273, 1805, 2983, 6365, 10519, 14915, 24187, 52595, 56677, 120935, 199861, 283385, 999305, 3797359, 18986795]

約数ペア:

[(1, 18986795), (5, 3797359), (19, 999305), (67, 283385), (95, 199861), (157, 120935), (335, 56677), (361, 52595), (785, 24187), (1273, 14915), (1805, 10519), (2983, 6365)]