21747213

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{3389}}^1$

素因数の和:3449

約数の個数: 24

約数和(自身を含む): 33845760

約数和(自身を除く): 12098547

約数列:

[1, 3, 9, 23, 31, 69, 93, 207, 279, 713, 2139, 3389, 6417, 10167, 30501, 77947, 105059, 233841, 315177, 701523, 945531, 2416357, 7249071, 21747213]

約数ペア:

[(1, 21747213), (3, 7249071), (9, 2416357), (23, 945531), (31, 701523), (69, 315177), (93, 233841), (207, 105059), (279, 77947), (713, 30501), (2139, 10167), (3389, 6417)]