15990884

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{223}}^1$

素因数の和:444

約数の個数: 48

約数和(自身を含む): 34771968

約数和(自身を除く): 18781084

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 182, 197, 223, 364, 394, 446, 788, 892, 1379, 1561, 2561, 2758, 2899, 3122, 5122, 5516, 5798, 6244, 10244, 11596, 17927, 20293, 35854, 40586, 43931, 71708, 81172, 87862, 175724, 307517, 571103, 615034, 1142206, 1230068, 2284412, 3997721, 7995442, 15990884]

約数ペア:

[(1, 15990884), (2, 7995442), (4, 3997721), (7, 2284412), (13, 1230068), (14, 1142206), (26, 615034), (28, 571103), (52, 307517), (91, 175724), (182, 87862), (197, 81172), (223, 71708), (364, 43931), (394, 40586), (446, 35854), (788, 20293), (892, 17927), (1379, 11596), (1561, 10244), (2561, 6244), (2758, 5798), (2899, 5516), (3122, 5122)]