263965

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1$

素因数の和:180

約数の個数: 16

約数和(自身を含む): 354816

約数和(自身を除く): 90851

約数列:

[1, 5, 13, 31, 65, 131, 155, 403, 655, 1703, 2015, 4061, 8515, 20305, 52793, 263965]

約数ペア:

[(1, 263965), (5, 52793), (13, 20305), (31, 8515), (65, 4061), (131, 2015), (155, 1703), (403, 655)]