21481336784

素因数分解:

$2^4\times {\mathrm{199}}^1\times {\mathrm{6746651}}^1$

素因数の和:6746858

約数の個数: 20

約数和(自身を含む): 41829242400

約数和(自身を除く): 20347905616

約数列:

[1, 2, 4, 8, 16, 199, 398, 796, 1592, 3184, 6746651, 13493302, 26986604, 53973208, 107946416, 1342583549, 2685167098, 5370334196, 10740668392, 21481336784]

約数ペア:

[(1, 21481336784), (2, 10740668392), (4, 5370334196), (8, 2685167098), (16, 1342583549), (199, 107946416), (398, 53973208), (796, 26986604), (1592, 13493302), (3184, 6746651)]