20638256

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{2341}}^1$

素因数の和:2397

約数の個数: 40

約数和(自身を含む): 43561200

約数和(自身を除く): 22922944

約数列:

[1, 2, 4, 8, 16, 19, 29, 38, 58, 76, 116, 152, 232, 304, 464, 551, 1102, 2204, 2341, 4408, 4682, 8816, 9364, 18728, 37456, 44479, 67889, 88958, 135778, 177916, 271556, 355832, 543112, 711664, 1086224, 1289891, 2579782, 5159564, 10319128, 20638256]

約数ペア:

[(1, 20638256), (2, 10319128), (4, 5159564), (8, 2579782), (16, 1289891), (19, 1086224), (29, 711664), (38, 543112), (58, 355832), (76, 271556), (116, 177916), (152, 135778), (232, 88958), (304, 67889), (464, 44479), (551, 37456), (1102, 18728), (2204, 9364), (2341, 8816), (4408, 4682)]