21780534

素因数分解:

$2^1\times 3^1\times {\mathrm{137}}^1\times {\mathrm{26497}}^1$

素因数の和:26639

約数の個数: 16

約数和(自身を含む): 43880688

約数和(自身を除く): 22100154

約数列:

[1, 2, 3, 6, 137, 274, 411, 822, 26497, 52994, 79491, 158982, 3630089, 7260178, 10890267, 21780534]

約数ペア:

[(1, 21780534), (2, 10890267), (3, 7260178), (6, 3630089), (137, 158982), (274, 79491), (411, 52994), (822, 26497)]