20550159

素因数分解:

$3^3\times 7^4\times {\mathrm{317}}^1$

素因数の和:354

約数の個数: 40

約数和(自身を含む): 35628720

約数和(自身を除く): 15078561

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 317, 343, 441, 951, 1029, 1323, 2219, 2401, 2853, 3087, 6657, 7203, 8559, 9261, 15533, 19971, 21609, 46599, 59913, 64827, 108731, 139797, 326193, 419391, 761117, 978579, 2283351, 2935737, 6850053, 20550159]

約数ペア:

[(1, 20550159), (3, 6850053), (7, 2935737), (9, 2283351), (21, 978579), (27, 761117), (49, 419391), (63, 326193), (147, 139797), (189, 108731), (317, 64827), (343, 59913), (441, 46599), (951, 21609), (1029, 19971), (1323, 15533), (2219, 9261), (2401, 8559), (2853, 7203), (3087, 6657)]