1645904

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{193}}^1$

素因数の和:255

約数の個数: 40

約数和(自身を含む): 3536232

約数和(自身を除く): 1890328

約数列:

[1, 2, 4, 8, 13, 16, 26, 41, 52, 82, 104, 164, 193, 208, 328, 386, 533, 656, 772, 1066, 1544, 2132, 2509, 3088, 4264, 5018, 7913, 8528, 10036, 15826, 20072, 31652, 40144, 63304, 102869, 126608, 205738, 411476, 822952, 1645904]

約数ペア:

[(1, 1645904), (2, 822952), (4, 411476), (8, 205738), (13, 126608), (16, 102869), (26, 63304), (41, 40144), (52, 31652), (82, 20072), (104, 15826), (164, 10036), (193, 8528), (208, 7913), (328, 5018), (386, 4264), (533, 3088), (656, 2509), (772, 2132), (1066, 1544)]