21734128

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{104491}}^1$

素因数の和:104512

約数の個数: 20

約数和(自身を含む): 45349528

約数和(自身を除く): 23615400

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 104491, 208982, 417964, 835928, 1358383, 1671856, 2716766, 5433532, 10867064, 21734128]

約数ペア:

[(1, 21734128), (2, 10867064), (4, 5433532), (8, 2716766), (13, 1671856), (16, 1358383), (26, 835928), (52, 417964), (104, 208982), (208, 104491)]