21497686

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{66763}}^1$

素因数の和:66795

約数の個数: 16

約数和(自身を含む): 38456064

約数和(自身を除く): 16958378

約数列:

[1, 2, 7, 14, 23, 46, 161, 322, 66763, 133526, 467341, 934682, 1535549, 3071098, 10748843, 21497686]

約数ペア:

[(1, 21497686), (2, 10748843), (7, 3071098), (14, 1535549), (23, 934682), (46, 467341), (161, 133526), (322, 66763)]