21371402

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{1193}}^1$

素因数の和:1274

約数の個数: 24

約数和(自身を含む): 35397324

約数和(自身を除く): 14025922

約数列:

[1, 2, 13, 26, 53, 106, 169, 338, 689, 1193, 1378, 2386, 8957, 15509, 17914, 31018, 63229, 126458, 201617, 403234, 821977, 1643954, 10685701, 21371402]

約数ペア:

[(1, 21371402), (2, 10685701), (13, 1643954), (26, 821977), (53, 403234), (106, 201617), (169, 126458), (338, 63229), (689, 31018), (1193, 17914), (1378, 15509), (2386, 8957)]