18865965

素因数分解:

$3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{9601}}^1$

素因数の和:9740

約数の個数: 16

約数和(自身を含む): 30419136

約数和(自身を除く): 11553171

約数列:

[1, 3, 5, 15, 131, 393, 655, 1965, 9601, 28803, 48005, 144015, 1257731, 3773193, 6288655, 18865965]

約数ペア:

[(1, 18865965), (3, 6288655), (5, 3773193), (15, 1257731), (131, 144015), (393, 48005), (655, 28803), (1965, 9601)]