66571856

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{320057}}^1$

素因数の和:320078

約数の個数: 20

約数和(自身を含む): 138905172

約数和(自身を除く): 72333316

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 320057, 640114, 1280228, 2560456, 4160741, 5120912, 8321482, 16642964, 33285928, 66571856]

約数ペア:

[(1, 66571856), (2, 33285928), (4, 16642964), (8, 8321482), (13, 5120912), (16, 4160741), (26, 2560456), (52, 1280228), (104, 640114), (208, 320057)]