256785

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1$

素因数の和:97

約数の個数: 32

約数和(自身を含む): 466560

約数和(自身を除く): 209775

約数列:

[1, 3, 5, 15, 17, 19, 51, 53, 57, 85, 95, 159, 255, 265, 285, 323, 795, 901, 969, 1007, 1615, 2703, 3021, 4505, 4845, 5035, 13515, 15105, 17119, 51357, 85595, 256785]

約数ペア:

[(1, 256785), (3, 85595), (5, 51357), (15, 17119), (17, 15105), (19, 13515), (51, 5035), (53, 4845), (57, 4505), (85, 3021), (95, 2703), (159, 1615), (255, 1007), (265, 969), (285, 901), (323, 795)]