21098313

素因数分解:

$3^4\times {\mathrm{41}}^1\times {\mathrm{6353}}^1$

素因数の和:6406

約数の個数: 20

約数和(自身を含む): 32291028

約数和(自身を除く): 11192715

約数列:

[1, 3, 9, 27, 41, 81, 123, 369, 1107, 3321, 6353, 19059, 57177, 171531, 260473, 514593, 781419, 2344257, 7032771, 21098313]

約数ペア:

[(1, 21098313), (3, 7032771), (9, 2344257), (27, 781419), (41, 514593), (81, 260473), (123, 171531), (369, 57177), (1107, 19059), (3321, 6353)]