1987315

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1571}}^1$

素因数の和:1610

約数の個数: 16

約数和(自身を含む): 2716416

約数和(自身を除く): 729101

約数列:

[1, 5, 11, 23, 55, 115, 253, 1265, 1571, 7855, 17281, 36133, 86405, 180665, 397463, 1987315]

約数ペア:

[(1, 1987315), (5, 397463), (11, 180665), (23, 86405), (55, 36133), (115, 17281), (253, 7855), (1265, 1571)]