20339728

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{2909}}^1$

素因数の和:2959

約数の個数: 40

約数和(自身を含む): 43300800

約数和(自身を除く): 22961072

約数列:

[1, 2, 4, 8, 16, 19, 23, 38, 46, 76, 92, 152, 184, 304, 368, 437, 874, 1748, 2909, 3496, 5818, 6992, 11636, 23272, 46544, 55271, 66907, 110542, 133814, 221084, 267628, 442168, 535256, 884336, 1070512, 1271233, 2542466, 5084932, 10169864, 20339728]

約数ペア:

[(1, 20339728), (2, 10169864), (4, 5084932), (8, 2542466), (16, 1271233), (19, 1070512), (23, 884336), (38, 535256), (46, 442168), (76, 267628), (92, 221084), (152, 133814), (184, 110542), (304, 66907), (368, 55271), (437, 46544), (874, 23272), (1748, 11636), (2909, 6992), (3496, 5818)]