21998005

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1\times {\mathrm{971}}^1$

素因数の和:1196

約数の個数: 16

約数和(自身を含む): 27713664

約数和(自身を除く): 5715659

約数列:

[1, 5, 23, 115, 197, 971, 985, 4531, 4855, 22333, 22655, 111665, 191287, 956435, 4399601, 21998005]

約数ペア:

[(1, 21998005), (5, 4399601), (23, 956435), (115, 191287), (197, 111665), (971, 22655), (985, 22333), (4531, 4855)]