20019844

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{881}}^1$

素因数の和:940

約数の個数: 48

約数和(自身を含む): 41489280

約数和(自身を除く): 21469436

約数列:

[1, 2, 4, 13, 19, 23, 26, 38, 46, 52, 76, 92, 247, 299, 437, 494, 598, 874, 881, 988, 1196, 1748, 1762, 3524, 5681, 11362, 11453, 16739, 20263, 22724, 22906, 33478, 40526, 45812, 66956, 81052, 217607, 263419, 384997, 435214, 526838, 769994, 870428, 1053676, 1539988, 5004961, 10009922, 20019844]

約数ペア:

[(1, 20019844), (2, 10009922), (4, 5004961), (13, 1539988), (19, 1053676), (23, 870428), (26, 769994), (38, 526838), (46, 435214), (52, 384997), (76, 263419), (92, 217607), (247, 81052), (299, 66956), (437, 45812), (494, 40526), (598, 33478), (874, 22906), (881, 22724), (988, 20263), (1196, 16739), (1748, 11453), (1762, 11362), (3524, 5681)]