21453393

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{97}}^1\times {\mathrm{107}}^1$

素因数の和:273

約数の個数: 32

約数和(自身を含む): 32006016

約数和(自身を除く): 10552623

約数列:

[1, 3, 13, 39, 53, 97, 107, 159, 291, 321, 689, 1261, 1391, 2067, 3783, 4173, 5141, 5671, 10379, 15423, 17013, 31137, 66833, 73723, 134927, 200499, 221169, 404781, 550087, 1650261, 7151131, 21453393]

約数ペア:

[(1, 21453393), (3, 7151131), (13, 1650261), (39, 550087), (53, 404781), (97, 221169), (107, 200499), (159, 134927), (291, 73723), (321, 66833), (689, 31137), (1261, 17013), (1391, 15423), (2067, 10379), (3783, 5671), (4173, 5141)]