21509414

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1\times {\mathrm{1549}}^1$

素因数の和:1735

約数の個数: 16

約数和(自身を含む): 33145200

約数和(自身を除く): 11635786

約数列:

[1, 2, 53, 106, 131, 262, 1549, 3098, 6943, 13886, 82097, 164194, 202919, 405838, 10754707, 21509414]

約数ペア:

[(1, 21509414), (2, 10754707), (53, 405838), (106, 202919), (131, 164194), (262, 82097), (1549, 13886), (3098, 6943)]