19713968

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{42487}}^1$

素因数の和:42524

約数の個数: 20

約数和(自身を含む): 39513840

約数和(自身を除く): 19799872

約数列:

[1, 2, 4, 8, 16, 29, 58, 116, 232, 464, 42487, 84974, 169948, 339896, 679792, 1232123, 2464246, 4928492, 9856984, 19713968]

約数ペア:

[(1, 19713968), (2, 9856984), (4, 4928492), (8, 2464246), (16, 1232123), (29, 679792), (58, 339896), (116, 169948), (232, 84974), (464, 42487)]