20687814

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{113}}^1\times {\mathrm{1453}}^1$

素因数の和:1581

約数の個数: 48

約数和(自身を含む): 51715872

約数和(自身を除く): 31028058

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 113, 126, 226, 339, 678, 791, 1017, 1453, 1582, 2034, 2373, 2906, 4359, 4746, 7119, 8718, 10171, 13077, 14238, 20342, 26154, 30513, 61026, 91539, 164189, 183078, 328378, 492567, 985134, 1149323, 1477701, 2298646, 2955402, 3447969, 6895938, 10343907, 20687814]

約数ペア:

[(1, 20687814), (2, 10343907), (3, 6895938), (6, 3447969), (7, 2955402), (9, 2298646), (14, 1477701), (18, 1149323), (21, 985134), (42, 492567), (63, 328378), (113, 183078), (126, 164189), (226, 91539), (339, 61026), (678, 30513), (791, 26154), (1017, 20342), (1453, 14238), (1582, 13077), (2034, 10171), (2373, 8718), (2906, 7119), (4359, 4746)]