20828199

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{52201}}^1$

素因数の和:52230

約数の個数: 16

約数和(自身を含む): 33409280

約数和(自身を除く): 12581081

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 52201, 156603, 365407, 991819, 1096221, 2975457, 6942733, 20828199]

約数ペア:

[(1, 20828199), (3, 6942733), (7, 2975457), (19, 1096221), (21, 991819), (57, 365407), (133, 156603), (399, 52201)]