19913465

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{27851}}^1$

素因数の和:27880

約数の個数: 16

約数和(自身を含む): 28074816

約数和(自身を除く): 8161351

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 27851, 139255, 306361, 362063, 1531805, 1810315, 3982693, 19913465]

約数ペア:

[(1, 19913465), (5, 3982693), (11, 1810315), (13, 1531805), (55, 362063), (65, 306361), (143, 139255), (715, 27851)]