1991231465

素因数分解:

$5^1\times {\mathrm{53}}^1\times {\mathrm{1361}}^1\times {\mathrm{5521}}^1$

素因数の和:6940

約数の個数: 16

約数和(自身を含む): 2436792336

約数和(自身を除く): 445560871

約数列:

[1, 5, 53, 265, 1361, 5521, 6805, 27605, 72133, 292613, 360665, 1463065, 7514081, 37570405, 398246293, 1991231465]

約数ペア:

[(1, 1991231465), (5, 398246293), (53, 37570405), (265, 7514081), (1361, 1463065), (5521, 360665), (6805, 292613), (27605, 72133)]