20178249

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{10559}}^1$

素因数の和:10589

約数の個数: 24

約数和(自身を含む): 33707520

約数和(自身を除く): 13529271

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 10559, 31677, 73913, 137267, 221739, 411801, 517391, 960869, 1552173, 2882607, 6726083, 20178249]

約数ペア:

[(1, 20178249), (3, 6726083), (7, 2882607), (13, 1552173), (21, 960869), (39, 517391), (49, 411801), (91, 221739), (147, 137267), (273, 73913), (637, 31677), (1911, 10559)]