21499216

素因数分解:

$2^4\times {\mathrm{659}}^1\times {\mathrm{2039}}^1$

素因数の和:2706

約数の個数: 20

約数和(自身を含む): 41738400

約数和(自身を除く): 20239184

約数列:

[1, 2, 4, 8, 16, 659, 1318, 2039, 2636, 4078, 5272, 8156, 10544, 16312, 32624, 1343701, 2687402, 5374804, 10749608, 21499216]

約数ペア:

[(1, 21499216), (2, 10749608), (4, 5374804), (8, 2687402), (16, 1343701), (659, 32624), (1318, 16312), (2039, 10544), (2636, 8156), (4078, 5272)]