1990521

素因数分解:

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

素因数の和:182

約数の個数: 32

約数和(自身を含む): 3265920

約数和(自身を除く): 1275399

約数列:

[1, 3, 9, 13, 27, 39, 53, 107, 117, 159, 321, 351, 477, 689, 963, 1391, 1431, 2067, 2889, 4173, 5671, 6201, 12519, 17013, 18603, 37557, 51039, 73723, 153117, 221169, 663507, 1990521]

約数ペア:

[(1, 1990521), (3, 663507), (9, 221169), (13, 153117), (27, 73723), (39, 51039), (53, 37557), (107, 18603), (117, 17013), (159, 12519), (321, 6201), (351, 5671), (477, 4173), (689, 2889), (963, 2067), (1391, 1431)]