1997515

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{389}}^1$

素因数の和:486

約数の個数: 16

約数和(自身を含む): 2620800

約数和(自身を除く): 623285

約数列:

[1, 5, 13, 65, 79, 389, 395, 1027, 1945, 5057, 5135, 25285, 30731, 153655, 399503, 1997515]

約数ペア:

[(1, 1997515), (5, 399503), (13, 153655), (65, 30731), (79, 25285), (389, 5135), (395, 5057), (1027, 1945)]