19996688

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{23581}}^1$

素因数の和:23642

約数の個数: 20

約数和(自身を含む): 39476268

約数和(自身を除く): 19479580

約数列:

[1, 2, 4, 8, 16, 53, 106, 212, 424, 848, 23581, 47162, 94324, 188648, 377296, 1249793, 2499586, 4999172, 9998344, 19996688]

約数ペア:

[(1, 19996688), (2, 9998344), (4, 4999172), (8, 2499586), (16, 1249793), (53, 377296), (106, 188648), (212, 94324), (424, 47162), (848, 23581)]