21646737

素因数分解:

$3^3\times 7^1\times {\mathrm{53}}^1\times {\mathrm{2161}}^1$

素因数の和:2230

約数の個数: 32

約数和(自身を含む): 37359360

約数和(自身を除く): 15712623

約数列:

[1, 3, 7, 9, 21, 27, 53, 63, 159, 189, 371, 477, 1113, 1431, 2161, 3339, 6483, 10017, 15127, 19449, 45381, 58347, 114533, 136143, 343599, 408429, 801731, 1030797, 2405193, 3092391, 7215579, 21646737]

約数ペア:

[(1, 21646737), (3, 7215579), (7, 3092391), (9, 2405193), (21, 1030797), (27, 801731), (53, 408429), (63, 343599), (159, 136143), (189, 114533), (371, 58347), (477, 45381), (1113, 19449), (1431, 15127), (2161, 10017), (3339, 6483)]