3991988

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{997}}^1$

素因数の和:1032

約数の個数: 48

約数和(自身を含む): 9389184

約数和(自身を除く): 5397196

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 143, 154, 182, 286, 308, 364, 572, 997, 1001, 1994, 2002, 3988, 4004, 6979, 10967, 12961, 13958, 21934, 25922, 27916, 43868, 51844, 76769, 90727, 142571, 153538, 181454, 285142, 307076, 362908, 570284, 997997, 1995994, 3991988]

約数ペア:

[(1, 3991988), (2, 1995994), (4, 997997), (7, 570284), (11, 362908), (13, 307076), (14, 285142), (22, 181454), (26, 153538), (28, 142571), (44, 90727), (52, 76769), (77, 51844), (91, 43868), (143, 27916), (154, 25922), (182, 21934), (286, 13958), (308, 12961), (364, 10967), (572, 6979), (997, 4004), (1001, 3988), (1994, 2002)]