631616

素因数分解:

$2^6\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:222

約数の個数: 28

約数和(自身を含む): 1280160

約数和(自身を除く): 648544

約数列:

[1, 2, 4, 8, 16, 32, 64, 71, 139, 142, 278, 284, 556, 568, 1112, 1136, 2224, 2272, 4448, 4544, 8896, 9869, 19738, 39476, 78952, 157904, 315808, 631616]

約数ペア:

[(1, 631616), (2, 315808), (4, 157904), (8, 78952), (16, 39476), (32, 19738), (64, 9869), (71, 8896), (139, 4544), (142, 4448), (278, 2272), (284, 2224), (556, 1136), (568, 1112)]