20975601

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{71}}^2\times {\mathrm{73}}^1$

素因数の和:237

約数の個数: 24

約数和(自身を含む): 30268960

約数和(自身を除く): 9293359

約数列:

[1, 3, 19, 57, 71, 73, 213, 219, 1349, 1387, 4047, 4161, 5041, 5183, 15123, 15549, 95779, 98477, 287337, 295431, 367993, 1103979, 6991867, 20975601]

約数ペア:

[(1, 20975601), (3, 6991867), (19, 1103979), (57, 367993), (71, 295431), (73, 287337), (213, 98477), (219, 95779), (1349, 15549), (1387, 15123), (4047, 5183), (4161, 5041)]