21295690

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{12601}}^1$

素因数の和:12634

約数の個数: 24

約数和(自身を含む): 41510988

約数和(自身を除く): 20215298

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 12601, 25202, 63005, 126010, 163813, 327626, 819065, 1638130, 2129569, 4259138, 10647845, 21295690]

約数ペア:

[(1, 21295690), (2, 10647845), (5, 4259138), (10, 2129569), (13, 1638130), (26, 819065), (65, 327626), (130, 163813), (169, 126010), (338, 63005), (845, 25202), (1690, 12601)]