19717972

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{401}}^1\times {\mathrm{647}}^1$

素因数の和:1071

約数の個数: 24

約数和(自身を含む): 36469440

約数和(自身を除く): 16751468

約数列:

[1, 2, 4, 19, 38, 76, 401, 647, 802, 1294, 1604, 2588, 7619, 12293, 15238, 24586, 30476, 49172, 259447, 518894, 1037788, 4929493, 9858986, 19717972]

約数ペア:

[(1, 19717972), (2, 9858986), (4, 4929493), (19, 1037788), (38, 518894), (76, 259447), (401, 49172), (647, 30476), (802, 24586), (1294, 15238), (1604, 12293), (2588, 7619)]