21491076723

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1\times {\mathrm{991}}^1\times {\mathrm{1123}}^1$

素因数の和:2315

約数の個数: 32

約数和(自身を含む): 29596772352

約数和(自身を除く): 8105695629

約数列:

[1, 3, 41, 123, 157, 471, 991, 1123, 2973, 3369, 6437, 19311, 40631, 46043, 121893, 138129, 155587, 176311, 466761, 528933, 1112893, 3338679, 6379067, 7228751, 19137201, 21686253, 45628613, 136885839, 174724201, 524172603, 7163692241, 21491076723]

約数ペア:

[(1, 21491076723), (3, 7163692241), (41, 524172603), (123, 174724201), (157, 136885839), (471, 45628613), (991, 21686253), (1123, 19137201), (2973, 7228751), (3369, 6379067), (6437, 3338679), (19311, 1112893), (40631, 528933), (46043, 466761), (121893, 176311), (138129, 155587)]