21566421

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{4547}}^1$

素因数の和:4601

約数の個数: 24

約数和(自身を含む): 34055424

約数和(自身を除く): 12489003

約数列:

[1, 3, 9, 17, 31, 51, 93, 153, 279, 527, 1581, 4547, 4743, 13641, 40923, 77299, 140957, 231897, 422871, 695691, 1268613, 2396269, 7188807, 21566421]

約数ペア:

[(1, 21566421), (3, 7188807), (9, 2396269), (17, 1268613), (31, 695691), (51, 422871), (93, 231897), (153, 140957), (279, 77299), (527, 40923), (1581, 13641), (4547, 4743)]