21853808

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{25771}}^1$

素因数の和:25832

約数の個数: 20

約数和(自身を含む): 43142328

約数和(自身を除く): 21288520

約数列:

[1, 2, 4, 8, 16, 53, 106, 212, 424, 848, 25771, 51542, 103084, 206168, 412336, 1365863, 2731726, 5463452, 10926904, 21853808]

約数ペア:

[(1, 21853808), (2, 10926904), (4, 5463452), (8, 2731726), (16, 1365863), (53, 412336), (106, 206168), (212, 103084), (424, 51542), (848, 25771)]