19728207

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{577}}^1$

素因数の和:743

約数の個数: 24

約数和(自身を含む): 29755440

約数和(自身を除く): 10027233

約数列:

[1, 3, 9, 29, 87, 131, 261, 393, 577, 1179, 1731, 3799, 5193, 11397, 16733, 34191, 50199, 75587, 150597, 226761, 680283, 2192023, 6576069, 19728207]

約数ペア:

[(1, 19728207), (3, 6576069), (9, 2192023), (29, 680283), (87, 226761), (131, 150597), (261, 75587), (393, 50199), (577, 34191), (1179, 16733), (1731, 11397), (3799, 5193)]