20947101

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{1117}}^1$

素因数の和:1193

約数の個数: 32

約数和(自身を含む): 34344960

約数和(自身を除く): 13397859

約数列:

[1, 3, 7, 19, 21, 47, 57, 133, 141, 329, 399, 893, 987, 1117, 2679, 3351, 6251, 7819, 18753, 21223, 23457, 52499, 63669, 148561, 157497, 367493, 445683, 997481, 1102479, 2992443, 6982367, 20947101]

約数ペア:

[(1, 20947101), (3, 6982367), (7, 2992443), (19, 1102479), (21, 997481), (47, 445683), (57, 367493), (133, 157497), (141, 148561), (329, 63669), (399, 52499), (893, 23457), (987, 21223), (1117, 18753), (2679, 7819), (3351, 6251)]