21526868

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{79}}^1\times {\mathrm{563}}^1$

素因数の和:668

約数の個数: 36

約数和(自身を含む): 42006720

約数和(自身を除く): 20479852

約数列:

[1, 2, 4, 11, 22, 44, 79, 121, 158, 242, 316, 484, 563, 869, 1126, 1738, 2252, 3476, 6193, 9559, 12386, 19118, 24772, 38236, 44477, 68123, 88954, 136246, 177908, 272492, 489247, 978494, 1956988, 5381717, 10763434, 21526868]

約数ペア:

[(1, 21526868), (2, 10763434), (4, 5381717), (11, 1956988), (22, 978494), (44, 489247), (79, 272492), (121, 177908), (158, 136246), (242, 88954), (316, 68123), (484, 44477), (563, 38236), (869, 24772), (1126, 19118), (1738, 12386), (2252, 9559), (3476, 6193)]