20591326

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{389}}^1$

素因数の和:616

約数の個数: 32

約数和(自身を含む): 37440000

約数和(自身を除く): 16848674

約数列:

[1, 2, 7, 14, 19, 38, 133, 199, 266, 389, 398, 778, 1393, 2723, 2786, 3781, 5446, 7391, 7562, 14782, 26467, 51737, 52934, 77411, 103474, 154822, 541877, 1083754, 1470809, 2941618, 10295663, 20591326]

約数ペア:

[(1, 20591326), (2, 10295663), (7, 2941618), (14, 1470809), (19, 1083754), (38, 541877), (133, 154822), (199, 103474), (266, 77411), (389, 52934), (398, 51737), (778, 26467), (1393, 14782), (2723, 7562), (2786, 7391), (3781, 5446)]