21771393

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{631}}^1$

素因数の和:725

約数の個数: 32

約数和(自身を含む): 34947072

約数和(自身を除く): 13175679

約数列:

[1, 3, 7, 21, 31, 53, 93, 159, 217, 371, 631, 651, 1113, 1643, 1893, 4417, 4929, 11501, 13251, 19561, 33443, 34503, 58683, 100329, 136927, 234101, 410781, 702303, 1036733, 3110199, 7257131, 21771393]

約数ペア:

[(1, 21771393), (3, 7257131), (7, 3110199), (21, 1036733), (31, 702303), (53, 410781), (93, 234101), (159, 136927), (217, 100329), (371, 58683), (631, 34503), (651, 33443), (1113, 19561), (1643, 13251), (1893, 11501), (4417, 4929)]