18640557

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2309}}^1$

素因数の和:2354

約数の個数: 32

約数和(自身を含む): 31046400

約数和(自身を除く): 12405843

約数列:

[1, 3, 9, 13, 23, 27, 39, 69, 117, 207, 299, 351, 621, 897, 2309, 2691, 6927, 8073, 20781, 30017, 53107, 62343, 90051, 159321, 270153, 477963, 690391, 810459, 1433889, 2071173, 6213519, 18640557]

約数ペア:

[(1, 18640557), (3, 6213519), (9, 2071173), (13, 1433889), (23, 810459), (27, 690391), (39, 477963), (69, 270153), (117, 159321), (207, 90051), (299, 62343), (351, 53107), (621, 30017), (897, 20781), (2309, 8073), (2691, 6927)]