19917172

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{19681}}^1$

素因数の和:19719

約数の個数: 24

約数和(自身を含む): 39678912

約数和(自身を除く): 19761740

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 92, 253, 506, 1012, 19681, 39362, 78724, 216491, 432982, 452663, 865964, 905326, 1810652, 4979293, 9958586, 19917172]

約数ペア:

[(1, 19917172), (2, 9958586), (4, 4979293), (11, 1810652), (22, 905326), (23, 865964), (44, 452663), (46, 432982), (92, 216491), (253, 78724), (506, 39362), (1012, 19681)]