20806844

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{41}}^1\times {\mathrm{439}}^1$

素因数の和:518

約数の個数: 36

約数和(自身を含む): 39713520

約数和(自身を除く): 18906676

約数列:

[1, 2, 4, 17, 34, 41, 68, 82, 164, 289, 439, 578, 697, 878, 1156, 1394, 1756, 2788, 7463, 11849, 14926, 17999, 23698, 29852, 35998, 47396, 71996, 126871, 253742, 305983, 507484, 611966, 1223932, 5201711, 10403422, 20806844]

約数ペア:

[(1, 20806844), (2, 10403422), (4, 5201711), (17, 1223932), (34, 611966), (41, 507484), (68, 305983), (82, 253742), (164, 126871), (289, 71996), (439, 47396), (578, 35998), (697, 29852), (878, 23698), (1156, 17999), (1394, 14926), (1756, 11849), (2788, 7463)]