20827971

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{349}}^2$

素因数の和:723

約数の個数: 18

約数和(自身を含む): 31759260

約数和(自身を除く): 10931289

約数列:

[1, 3, 9, 19, 57, 171, 349, 1047, 3141, 6631, 19893, 59679, 121801, 365403, 1096209, 2314219, 6942657, 20827971]

約数ペア:

[(1, 20827971), (3, 6942657), (9, 2314219), (19, 1096209), (57, 365403), (171, 121801), (349, 59679), (1047, 19893), (3141, 6631)]