21959516

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{2557}}^1$

素因数の和:2693

約数の個数: 24

約数和(自身を含む): 40825680

約数和(自身を除く): 18866164

約数列:

[1, 2, 4, 19, 38, 76, 113, 226, 452, 2147, 2557, 4294, 5114, 8588, 10228, 48583, 97166, 194332, 288941, 577882, 1155764, 5489879, 10979758, 21959516]

約数ペア:

[(1, 21959516), (2, 10979758), (4, 5489879), (19, 1155764), (38, 577882), (76, 288941), (113, 194332), (226, 97166), (452, 48583), (2147, 10228), (2557, 8588), (4294, 5114)]