28203405

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{81749}}^1$

素因数の和:81780

約数の個数: 16

約数和(自身を含む): 47088000

約数和(自身を除く): 18884595

約数列:

[1, 3, 5, 15, 23, 69, 115, 345, 81749, 245247, 408745, 1226235, 1880227, 5640681, 9401135, 28203405]

約数ペア:

[(1, 28203405), (3, 9401135), (5, 5640681), (15, 1880227), (23, 1226235), (69, 408745), (115, 245247), (345, 81749)]