21490826

素因数分解:

$2^1\times 7^1\times {\mathrm{991}}^1\times {\mathrm{1549}}^1$

素因数の和:2549

約数の個数: 16

約数和(自身を含む): 36902400

約数和(自身を除く): 15411574

約数列:

[1, 2, 7, 14, 991, 1549, 1982, 3098, 6937, 10843, 13874, 21686, 1535059, 3070118, 10745413, 21490826]

約数ペア:

[(1, 21490826), (2, 10745413), (7, 3070118), (14, 1535059), (991, 21686), (1549, 13874), (1982, 10843), (3098, 6937)]