21771369

素因数分解:

$3^3\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{277}}^1$

素因数の和:398

約数の個数: 32

約数和(自身を含む): 33626880

約数和(自身を除く): 11855511

約数列:

[1, 3, 9, 27, 41, 71, 123, 213, 277, 369, 639, 831, 1107, 1917, 2493, 2911, 7479, 8733, 11357, 19667, 26199, 34071, 59001, 78597, 102213, 177003, 306639, 531009, 806347, 2419041, 7257123, 21771369]

約数ペア:

[(1, 21771369), (3, 7257123), (9, 2419041), (27, 806347), (41, 531009), (71, 306639), (123, 177003), (213, 102213), (277, 78597), (369, 59001), (639, 34071), (831, 26199), (1107, 19667), (1917, 11357), (2493, 8733), (2911, 7479)]