19898105

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{2437}}^1$

素因数の和:2536

約数の個数: 16

約数和(自身を含む): 25277184

約数和(自身を除く): 5379079

約数列:

[1, 5, 23, 71, 115, 355, 1633, 2437, 8165, 12185, 56051, 173027, 280255, 865135, 3979621, 19898105]

約数ペア:

[(1, 19898105), (5, 3979621), (23, 865135), (71, 280255), (115, 173027), (355, 56051), (1633, 12185), (2437, 8165)]