21000343390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{161541103}}^1$

素因数の和:161541123

約数の個数: 16

約数和(自身を含む): 40708358208

約数和(自身を除く): 19708014818

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 161541103, 323082206, 807705515, 1615411030, 2100034339, 4200068678, 10500171695, 21000343390]

約数ペア:

[(1, 21000343390), (2, 10500171695), (5, 4200068678), (10, 2100034339), (13, 1615411030), (26, 807705515), (65, 323082206), (130, 161541103)]