157904

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:218

約数の個数: 20

約数和(自身を含む): 312480

約数和(自身を除く): 154576

約数列:

[1, 2, 4, 8, 16, 71, 139, 142, 278, 284, 556, 568, 1112, 1136, 2224, 9869, 19738, 39476, 78952, 157904]

約数ペア:

[(1, 157904), (2, 78952), (4, 39476), (8, 19738), (16, 9869), (71, 2224), (139, 1136), (142, 1112), (278, 568), (284, 556)]