21502795

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{971}}^1$

素因数の和:1122

約数の個数: 16

約数和(自身を含む): 26687232

約数和(自身を除く): 5184437

約数列:

[1, 5, 43, 103, 215, 515, 971, 4429, 4855, 22145, 41753, 100013, 208765, 500065, 4300559, 21502795]

約数ペア:

[(1, 21502795), (5, 4300559), (43, 500065), (103, 208765), (215, 100013), (515, 41753), (971, 22145), (4429, 4855)]