20935397

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{199}}^1$

素因数の和:345

約数の個数: 24

約数和(自身を含む): 25992000

約数和(自身を除く): 5056603

約数列:

[1, 7, 19, 49, 113, 133, 199, 791, 931, 1393, 2147, 3781, 5537, 9751, 15029, 22487, 26467, 105203, 157409, 185269, 427253, 1101863, 2990771, 20935397]

約数ペア:

[(1, 20935397), (7, 2990771), (19, 1101863), (49, 427253), (113, 185269), (133, 157409), (199, 105203), (791, 26467), (931, 22487), (1393, 15029), (2147, 9751), (3781, 5537)]