257788655

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1\times {\mathrm{263}}^1$

素因数の和:455

約数の個数: 32

約数和(自身を含む): 327849984

約数和(自身を除く): 70061329

約数列:

[1, 5, 43, 47, 97, 215, 235, 263, 485, 1315, 2021, 4171, 4559, 10105, 11309, 12361, 20855, 22795, 25511, 56545, 61805, 127555, 196037, 531523, 980185, 1096973, 1199017, 2657615, 5484865, 5995085, 51557731, 257788655]

約数ペア:

[(1, 257788655), (5, 51557731), (43, 5995085), (47, 5484865), (97, 2657615), (215, 1199017), (235, 1096973), (263, 980185), (485, 531523), (1315, 196037), (2021, 127555), (4171, 61805), (4559, 56545), (10105, 25511), (11309, 22795), (12361, 20855)]