20557852

素因数分解:

$2^2\times 7^2\times {\mathrm{53}}^1\times {\mathrm{1979}}^1$

素因数の和:2050

約数の個数: 36

約数和(自身を含む): 42661080

約数和(自身を除く): 22103228

約数列:

[1, 2, 4, 7, 14, 28, 49, 53, 98, 106, 196, 212, 371, 742, 1484, 1979, 2597, 3958, 5194, 7916, 10388, 13853, 27706, 55412, 96971, 104887, 193942, 209774, 387884, 419548, 734209, 1468418, 2936836, 5139463, 10278926, 20557852]

約数ペア:

[(1, 20557852), (2, 10278926), (4, 5139463), (7, 2936836), (14, 1468418), (28, 734209), (49, 419548), (53, 387884), (98, 209774), (106, 193942), (196, 104887), (212, 96971), (371, 55412), (742, 27706), (1484, 13853), (1979, 10388), (2597, 7916), (3958, 5194)]