20210067381

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{43}}^2\times {\mathrm{1801}}^1$

素因数の和:1931

約数の個数: 72

約数和(自身を含む): 33511491264

約数和(自身を除く): 13301423883

約数列:

[1, 3, 7, 17, 21, 43, 51, 119, 129, 289, 301, 357, 731, 867, 903, 1801, 1849, 2023, 2193, 5117, 5403, 5547, 6069, 12427, 12607, 12943, 15351, 30617, 31433, 37281, 37821, 38829, 77443, 86989, 91851, 94299, 214319, 220031, 232329, 260967, 520489, 534361, 542101, 642957, 660093, 1316531, 1561467, 1603083, 1626303, 3330049, 3643423, 3740527, 3949593, 9215717, 9990147, 10930269, 11221581, 22381027, 23310343, 27647151, 56610833, 67143081, 69931029, 156667189, 169832499, 396275831, 470001567, 962384161, 1188827493, 2887152483, 6736689127, 20210067381]

約数ペア:

[(1, 20210067381), (3, 6736689127), (7, 2887152483), (17, 1188827493), (21, 962384161), (43, 470001567), (51, 396275831), (119, 169832499), (129, 156667189), (289, 69931029), (301, 67143081), (357, 56610833), (731, 27647151), (867, 23310343), (903, 22381027), (1801, 11221581), (1849, 10930269), (2023, 9990147), (2193, 9215717), (5117, 3949593), (5403, 3740527), (5547, 3643423), (6069, 3330049), (12427, 1626303), (12607, 1603083), (12943, 1561467), (15351, 1316531), (30617, 660093), (31433, 642957), (37281, 542101), (37821, 534361), (38829, 520489), (77443, 260967), (86989, 232329), (91851, 220031), (94299, 214319)]