40398788

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{101}}^1\times {\mathrm{277}}^1$

素因数の和:420

約数の個数: 36

約数和(自身を含む): 75625452

約数和(自身を除く): 35226664

約数列:

[1, 2, 4, 19, 38, 76, 101, 202, 277, 361, 404, 554, 722, 1108, 1444, 1919, 3838, 5263, 7676, 10526, 21052, 27977, 36461, 55954, 72922, 99997, 111908, 145844, 199994, 399988, 531563, 1063126, 2126252, 10099697, 20199394, 40398788]

約数ペア:

[(1, 40398788), (2, 20199394), (4, 10099697), (19, 2126252), (38, 1063126), (76, 531563), (101, 399988), (202, 199994), (277, 145844), (361, 111908), (404, 99997), (554, 72922), (722, 55954), (1108, 36461), (1444, 27977), (1919, 21052), (3838, 10526), (5263, 7676)]