19915555

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{3733}}^1$

素因数の和:3846

約数の個数: 16

約数和(自身を含む): 26347104

約数和(自身を除く): 6431549

約数列:

[1, 5, 11, 55, 97, 485, 1067, 3733, 5335, 18665, 41063, 205315, 362101, 1810505, 3983111, 19915555]

約数ペア:

[(1, 19915555), (5, 3983111), (11, 1810505), (55, 362101), (97, 205315), (485, 41063), (1067, 18665), (3733, 5335)]