21480884

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{130981}}^1$

素因数の和:131026

約数の個数: 12

約数和(自身を含む): 38508708

約数和(自身を除く): 17027824

約数列:

[1, 2, 4, 41, 82, 164, 130981, 261962, 523924, 5370221, 10740442, 21480884]

約数ペア:

[(1, 21480884), (2, 10740442), (4, 5370221), (41, 523924), (82, 261962), (164, 130981)]