21525988

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{3571}}^1$

素因数の和:3723

約数の個数: 24

約数和(自身を含む): 41406624

約数和(自身を除く): 19880636

約数列:

[1, 2, 4, 11, 22, 44, 137, 274, 548, 1507, 3014, 3571, 6028, 7142, 14284, 39281, 78562, 157124, 489227, 978454, 1956908, 5381497, 10762994, 21525988]

約数ペア:

[(1, 21525988), (2, 10762994), (4, 5381497), (11, 1956908), (22, 978454), (44, 489227), (137, 157124), (274, 78562), (548, 39281), (1507, 14284), (3014, 7142), (3571, 6028)]