20342140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11177}}^1$

素因数の和:11206

約数の個数: 48

約数和(自身を含む): 52581312

約数和(自身を除く): 32239172

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 11177, 22354, 44708, 55885, 78239, 111770, 145301, 156478, 223540, 290602, 312956, 391195, 581204, 726505, 782390, 1017107, 1453010, 1564780, 2034214, 2906020, 4068428, 5085535, 10171070, 20342140]

約数ペア:

[(1, 20342140), (2, 10171070), (4, 5085535), (5, 4068428), (7, 2906020), (10, 2034214), (13, 1564780), (14, 1453010), (20, 1017107), (26, 782390), (28, 726505), (35, 581204), (52, 391195), (65, 312956), (70, 290602), (91, 223540), (130, 156478), (140, 145301), (182, 111770), (260, 78239), (364, 55885), (455, 44708), (910, 22354), (1820, 11177)]