19789552

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{311}}^1$

素因数の和:457

約数の個数: 40

約数和(自身を含む): 39809952

約数和(自身を除く): 20020400

約数列:

[1, 2, 4, 8, 16, 41, 82, 97, 164, 194, 311, 328, 388, 622, 656, 776, 1244, 1552, 2488, 3977, 4976, 7954, 12751, 15908, 25502, 30167, 31816, 51004, 60334, 63632, 102008, 120668, 204016, 241336, 482672, 1236847, 2473694, 4947388, 9894776, 19789552]

約数ペア:

[(1, 19789552), (2, 9894776), (4, 4947388), (8, 2473694), (16, 1236847), (41, 482672), (82, 241336), (97, 204016), (164, 120668), (194, 102008), (311, 63632), (328, 60334), (388, 51004), (622, 31816), (656, 30167), (776, 25502), (1244, 15908), (1552, 12751), (2488, 7954), (3977, 4976)]