20686918

素因数分解:

$2^1\times 7^2\times {\mathrm{29}}^2\times {\mathrm{251}}^1$

素因数の和:325

約数の個数: 36

約数和(自身を含む): 37533132

約数和(自身を除く): 16846214

約数列:

[1, 2, 7, 14, 29, 49, 58, 98, 203, 251, 406, 502, 841, 1421, 1682, 1757, 2842, 3514, 5887, 7279, 11774, 12299, 14558, 24598, 41209, 50953, 82418, 101906, 211091, 356671, 422182, 713342, 1477637, 2955274, 10343459, 20686918]

約数ペア:

[(1, 20686918), (2, 10343459), (7, 2955274), (14, 1477637), (29, 713342), (49, 422182), (58, 356671), (98, 211091), (203, 101906), (251, 82418), (406, 50953), (502, 41209), (841, 24598), (1421, 14558), (1682, 12299), (1757, 11774), (2842, 7279), (3514, 5887)]