21979736

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{51839}}^1$

素因数の和:51898

約数の個数: 16

約数和(自身を含む): 41990400

約数和(自身を除く): 20010664

約数列:

[1, 2, 4, 8, 53, 106, 212, 424, 51839, 103678, 207356, 414712, 2747467, 5494934, 10989868, 21979736]

約数ペア:

[(1, 21979736), (2, 10989868), (4, 5494934), (8, 2747467), (53, 414712), (106, 207356), (212, 103678), (424, 51839)]