161777920

素因数分解:

$2^8\times 5^1\times {\mathrm{211}}^1\times {\mathrm{599}}^1$

素因数の和:831

約数の個数: 72

約数和(自身を含む): 389995200

約数和(自身を除く): 228217280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 211, 256, 320, 422, 599, 640, 844, 1055, 1198, 1280, 1688, 2110, 2396, 2995, 3376, 4220, 4792, 5990, 6752, 8440, 9584, 11980, 13504, 16880, 19168, 23960, 27008, 33760, 38336, 47920, 54016, 67520, 76672, 95840, 126389, 135040, 153344, 191680, 252778, 270080, 383360, 505556, 631945, 766720, 1011112, 1263890, 2022224, 2527780, 4044448, 5055560, 8088896, 10111120, 16177792, 20222240, 32355584, 40444480, 80888960, 161777920]

約数ペア:

[(1, 161777920), (2, 80888960), (4, 40444480), (5, 32355584), (8, 20222240), (10, 16177792), (16, 10111120), (20, 8088896), (32, 5055560), (40, 4044448), (64, 2527780), (80, 2022224), (128, 1263890), (160, 1011112), (211, 766720), (256, 631945), (320, 505556), (422, 383360), (599, 270080), (640, 252778), (844, 191680), (1055, 153344), (1198, 135040), (1280, 126389), (1688, 95840), (2110, 76672), (2396, 67520), (2995, 54016), (3376, 47920), (4220, 38336), (4792, 33760), (5990, 27008), (6752, 23960), (8440, 19168), (9584, 16880), (11980, 13504)]