81640720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{7673}}^1$

素因数の和:7712

約数の個数: 80

約数和(自身を含む): 228378240

約数和(自身を除く): 146737520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 35, 38, 40, 56, 70, 76, 80, 95, 112, 133, 140, 152, 190, 266, 280, 304, 380, 532, 560, 665, 760, 1064, 1330, 1520, 2128, 2660, 5320, 7673, 10640, 15346, 30692, 38365, 53711, 61384, 76730, 107422, 122768, 145787, 153460, 214844, 268555, 291574, 306920, 429688, 537110, 583148, 613840, 728935, 859376, 1020509, 1074220, 1166296, 1457870, 2041018, 2148440, 2332592, 2915740, 4082036, 4296880, 5102545, 5831480, 8164072, 10205090, 11662960, 16328144, 20410180, 40820360, 81640720]

約数ペア:

[(1, 81640720), (2, 40820360), (4, 20410180), (5, 16328144), (7, 11662960), (8, 10205090), (10, 8164072), (14, 5831480), (16, 5102545), (19, 4296880), (20, 4082036), (28, 2915740), (35, 2332592), (38, 2148440), (40, 2041018), (56, 1457870), (70, 1166296), (76, 1074220), (80, 1020509), (95, 859376), (112, 728935), (133, 613840), (140, 583148), (152, 537110), (190, 429688), (266, 306920), (280, 291574), (304, 268555), (380, 214844), (532, 153460), (560, 145787), (665, 122768), (760, 107422), (1064, 76730), (1330, 61384), (1520, 53711), (2128, 38365), (2660, 30692), (5320, 15346), (7673, 10640)]