258476

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{179}}^1$

素因数の和:221

約数の個数: 18

約数和(自身を含む): 480060

約数和(自身を除く): 221584

約数列:

[1, 2, 4, 19, 38, 76, 179, 358, 361, 716, 722, 1444, 3401, 6802, 13604, 64619, 129238, 258476]

約数ペア:

[(1, 258476), (2, 129238), (4, 64619), (19, 13604), (38, 6802), (76, 3401), (179, 1444), (358, 722), (361, 716)]