21511266

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{43}}^2\times {\mathrm{277}}^1$

素因数の和:375

約数の個数: 48

約数和(自身を含む): 50520384

約数和(自身を除く): 29009118

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 43, 86, 129, 258, 277, 301, 554, 602, 831, 903, 1662, 1806, 1849, 1939, 3698, 3878, 5547, 5817, 11094, 11634, 11911, 12943, 23822, 25886, 35733, 38829, 71466, 77658, 83377, 166754, 250131, 500262, 512173, 1024346, 1536519, 3073038, 3585211, 7170422, 10755633, 21511266]

約数ペア:

[(1, 21511266), (2, 10755633), (3, 7170422), (6, 3585211), (7, 3073038), (14, 1536519), (21, 1024346), (42, 512173), (43, 500262), (86, 250131), (129, 166754), (258, 83377), (277, 77658), (301, 71466), (554, 38829), (602, 35733), (831, 25886), (903, 23822), (1662, 12943), (1806, 11911), (1849, 11634), (1939, 11094), (3698, 5817), (3878, 5547)]