21137949

素因数分解:

$3^3\times 7^1\times {\mathrm{97}}^1\times {\mathrm{1153}}^1$

素因数の和:1266

約数の個数: 32

約数和(自身を含む): 36189440

約数和(自身を除く): 15051491

約数列:

[1, 3, 7, 9, 21, 27, 63, 97, 189, 291, 679, 873, 1153, 2037, 2619, 3459, 6111, 8071, 10377, 18333, 24213, 31131, 72639, 111841, 217917, 335523, 782887, 1006569, 2348661, 3019707, 7045983, 21137949]

約数ペア:

[(1, 21137949), (3, 7045983), (7, 3019707), (9, 2348661), (21, 1006569), (27, 782887), (63, 335523), (97, 217917), (189, 111841), (291, 72639), (679, 31131), (873, 24213), (1153, 18333), (2037, 10377), (2619, 8071), (3459, 6111)]