213528891

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{197}}^1\times {\mathrm{401}}^1$

素因数の和:671

約数の個数: 32

約数和(自身を含む): 309469248

約数和(自身を除く): 95940357

約数列:

[1, 3, 17, 51, 53, 159, 197, 401, 591, 901, 1203, 2703, 3349, 6817, 10047, 10441, 20451, 21253, 31323, 63759, 78997, 177497, 236991, 361301, 532491, 1083903, 1342949, 4028847, 4186841, 12560523, 71176297, 213528891]

約数ペア:

[(1, 213528891), (3, 71176297), (17, 12560523), (51, 4186841), (53, 4028847), (159, 1342949), (197, 1083903), (401, 532491), (591, 361301), (901, 236991), (1203, 177497), (2703, 78997), (3349, 63759), (6817, 31323), (10047, 21253), (10441, 20451)]