81999944

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{3299}}^1$

素因数の和:3557

約数の個数: 32

約数和(自身を含む): 166320000

約数和(自身を除く): 84320056

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 239, 478, 956, 1912, 3107, 3299, 6214, 6598, 12428, 13196, 24856, 26392, 42887, 85774, 171548, 343096, 788461, 1576922, 3153844, 6307688, 10249993, 20499986, 40999972, 81999944]

約数ペア:

[(1, 81999944), (2, 40999972), (4, 20499986), (8, 10249993), (13, 6307688), (26, 3153844), (52, 1576922), (104, 788461), (239, 343096), (478, 171548), (956, 85774), (1912, 42887), (3107, 26392), (3299, 24856), (6214, 13196), (6598, 12428)]