19887205

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{16103}}^1$

素因数の和:16140

約数の個数: 16

約数和(自身を含む): 27054720

約数和(自身を除く): 7167515

約数列:

[1, 5, 13, 19, 65, 95, 247, 1235, 16103, 80515, 209339, 305957, 1046695, 1529785, 3977441, 19887205]

約数ペア:

[(1, 19887205), (5, 3977441), (13, 1529785), (19, 1046695), (65, 305957), (95, 209339), (247, 80515), (1235, 16103)]