20102345

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{2609}}^1$

素因数の和:2704

約数の個数: 16

約数和(自身を含む): 25557120

約数和(自身を除く): 5454775

約数列:

[1, 5, 23, 67, 115, 335, 1541, 2609, 7705, 13045, 60007, 174803, 300035, 874015, 4020469, 20102345]

約数ペア:

[(1, 20102345), (5, 4020469), (23, 874015), (67, 300035), (115, 174803), (335, 60007), (1541, 13045), (2609, 7705)]