21031052

素因数分解:

$2^2\times 7^1\times {\mathrm{71}}^2\times {\mathrm{149}}^1$

素因数の和:302

約数の個数: 36

約数和(自身を含む): 42949200

約数和(自身を除く): 21918148

約数列:

[1, 2, 4, 7, 14, 28, 71, 142, 149, 284, 298, 497, 596, 994, 1043, 1988, 2086, 4172, 5041, 10082, 10579, 20164, 21158, 35287, 42316, 70574, 74053, 141148, 148106, 296212, 751109, 1502218, 3004436, 5257763, 10515526, 21031052]

約数ペア:

[(1, 21031052), (2, 10515526), (4, 5257763), (7, 3004436), (14, 1502218), (28, 751109), (71, 296212), (142, 148106), (149, 141148), (284, 74053), (298, 70574), (497, 42316), (596, 35287), (994, 21158), (1043, 20164), (1988, 10579), (2086, 10082), (4172, 5041)]