21130070

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{12503}}^1$

素因数の和:12536

約数の個数: 24

約数和(自身を含む): 41188176

約数和(自身を除く): 20058106

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 12503, 25006, 62515, 125030, 162539, 325078, 812695, 1625390, 2113007, 4226014, 10565035, 21130070]

約数ペア:

[(1, 21130070), (2, 10565035), (5, 4226014), (10, 2113007), (13, 1625390), (26, 812695), (65, 325078), (130, 162539), (169, 125030), (338, 62515), (845, 25006), (1690, 12503)]