20702920581

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{293147}}^1$

素因数の和:293238

約数の個数: 48

約数和(自身を含む): 36584870400

約数和(自身を除く): 15881949819

約数列:

[1, 3, 7, 9, 19, 21, 57, 59, 63, 133, 171, 177, 399, 413, 531, 1121, 1197, 1239, 3363, 3717, 7847, 10089, 23541, 70623, 293147, 879441, 2052029, 2638323, 5569793, 6156087, 16709379, 17295673, 18468261, 38988551, 50128137, 51887019, 116965653, 121069711, 155661057, 328617787, 350896959, 363209133, 985853361, 1089627399, 2300324509, 2957560083, 6900973527, 20702920581]

約数ペア:

[(1, 20702920581), (3, 6900973527), (7, 2957560083), (9, 2300324509), (19, 1089627399), (21, 985853361), (57, 363209133), (59, 350896959), (63, 328617787), (133, 155661057), (171, 121069711), (177, 116965653), (399, 51887019), (413, 50128137), (531, 38988551), (1121, 18468261), (1197, 17295673), (1239, 16709379), (3363, 6156087), (3717, 5569793), (7847, 2638323), (10089, 2052029), (23541, 879441), (70623, 293147)]