21487216

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{43321}}^1$

素因数の和:43360

約数の個数: 20

約数和(自身を含む): 42975424

約数和(自身を除く): 21488208

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 43321, 86642, 173284, 346568, 693136, 1342951, 2685902, 5371804, 10743608, 21487216]

約数ペア:

[(1, 21487216), (2, 10743608), (4, 5371804), (8, 2685902), (16, 1342951), (31, 693136), (62, 346568), (124, 173284), (248, 86642), (496, 43321)]