21184263

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{821}}^1$

素因数の和:935

約数の個数: 24

約数和(自身を含む): 31801536

約数和(自身を除く): 10617273

約数列:

[1, 3, 9, 47, 61, 141, 183, 423, 549, 821, 2463, 2867, 7389, 8601, 25803, 38587, 50081, 115761, 150243, 347283, 450729, 2353807, 7061421, 21184263]

約数ペア:

[(1, 21184263), (3, 7061421), (9, 2353807), (47, 450729), (61, 347283), (141, 150243), (183, 115761), (423, 50081), (549, 38587), (821, 25803), (2463, 8601), (2867, 7389)]