21556611

素因数分解:

$3^4\times {\mathrm{41}}^1\times {\mathrm{6491}}^1$

素因数の和:6544

約数の個数: 20

約数和(自身を含む): 32992344

約数和(自身を除く): 11435733

約数列:

[1, 3, 9, 27, 41, 81, 123, 369, 1107, 3321, 6491, 19473, 58419, 175257, 266131, 525771, 798393, 2395179, 7185537, 21556611]

約数ペア:

[(1, 21556611), (3, 7185537), (9, 2395179), (27, 798393), (41, 525771), (81, 266131), (123, 175257), (369, 58419), (1107, 19473), (3321, 6491)]