1997996

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{499}}^1$

素因数の和:534

約数の個数: 48

約数和(自身を含む): 4704000

約数和(自身を除く): 2706004

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 143, 154, 182, 286, 308, 364, 499, 572, 998, 1001, 1996, 2002, 3493, 4004, 5489, 6487, 6986, 10978, 12974, 13972, 21956, 25948, 38423, 45409, 71357, 76846, 90818, 142714, 153692, 181636, 285428, 499499, 998998, 1997996]

約数ペア:

[(1, 1997996), (2, 998998), (4, 499499), (7, 285428), (11, 181636), (13, 153692), (14, 142714), (22, 90818), (26, 76846), (28, 71357), (44, 45409), (52, 38423), (77, 25948), (91, 21956), (143, 13972), (154, 12974), (182, 10978), (286, 6986), (308, 6487), (364, 5489), (499, 4004), (572, 3493), (998, 2002), (1001, 1996)]