20540380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{6379}}^1$

素因数の和:6418

約数の個数: 48

約数和(自身を含む): 51448320

約数和(自身を除く): 30907940

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 6379, 12758, 25516, 31895, 44653, 63790, 89306, 127580, 146717, 178612, 223265, 293434, 446530, 586868, 733585, 893060, 1027019, 1467170, 2054038, 2934340, 4108076, 5135095, 10270190, 20540380]

約数ペア:

[(1, 20540380), (2, 10270190), (4, 5135095), (5, 4108076), (7, 2934340), (10, 2054038), (14, 1467170), (20, 1027019), (23, 893060), (28, 733585), (35, 586868), (46, 446530), (70, 293434), (92, 223265), (115, 178612), (140, 146717), (161, 127580), (230, 89306), (322, 63790), (460, 44653), (644, 31895), (805, 25516), (1610, 12758), (3220, 6379)]