20827566

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{379}}^1$

素因数の和:501

約数の個数: 48

約数和(自身を含む): 46949760

約数和(自身を除く): 26122194

約数列:

[1, 2, 3, 6, 9, 18, 43, 71, 86, 129, 142, 213, 258, 379, 387, 426, 639, 758, 774, 1137, 1278, 2274, 3053, 3411, 6106, 6822, 9159, 16297, 18318, 26909, 27477, 32594, 48891, 53818, 54954, 80727, 97782, 146673, 161454, 242181, 293346, 484362, 1157087, 2314174, 3471261, 6942522, 10413783, 20827566]

約数ペア:

[(1, 20827566), (2, 10413783), (3, 6942522), (6, 3471261), (9, 2314174), (18, 1157087), (43, 484362), (71, 293346), (86, 242181), (129, 161454), (142, 146673), (213, 97782), (258, 80727), (379, 54954), (387, 53818), (426, 48891), (639, 32594), (758, 27477), (774, 26909), (1137, 18318), (1278, 16297), (2274, 9159), (3053, 6822), (3411, 6106)]