280995

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1$

素因数の和:163

約数の個数: 32

約数和(自身を含む): 532224

約数和(自身を除く): 251229

約数列:

[1, 3, 5, 11, 13, 15, 33, 39, 55, 65, 131, 143, 165, 195, 393, 429, 655, 715, 1441, 1703, 1965, 2145, 4323, 5109, 7205, 8515, 18733, 21615, 25545, 56199, 93665, 280995]

約数ペア:

[(1, 280995), (3, 93665), (5, 56199), (11, 25545), (13, 21615), (15, 18733), (33, 8515), (39, 7205), (55, 5109), (65, 4323), (131, 2145), (143, 1965), (165, 1703), (195, 1441), (393, 715), (429, 655)]