80640

素因数分解:

$2^8\times 3^2\times 5^1\times 7^1$

素因数の和:34

約数の個数: 108

約数和(自身を含む): 318864

約数和(自身を除く): 238224

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 128, 140, 144, 160, 168, 180, 192, 210, 224, 240, 252, 256, 280, 288, 315, 320, 336, 360, 384, 420, 448, 480, 504, 560, 576, 630, 640, 672, 720, 768, 840, 896, 960, 1008, 1120, 1152, 1260, 1280, 1344, 1440, 1680, 1792, 1920, 2016, 2240, 2304, 2520, 2688, 2880, 3360, 3840, 4032, 4480, 5040, 5376, 5760, 6720, 8064, 8960, 10080, 11520, 13440, 16128, 20160, 26880, 40320, 80640]

約数ペア:

[(1, 80640), (2, 40320), (3, 26880), (4, 20160), (5, 16128), (6, 13440), (7, 11520), (8, 10080), (9, 8960), (10, 8064), (12, 6720), (14, 5760), (15, 5376), (16, 5040), (18, 4480), (20, 4032), (21, 3840), (24, 3360), (28, 2880), (30, 2688), (32, 2520), (35, 2304), (36, 2240), (40, 2016), (42, 1920), (45, 1792), (48, 1680), (56, 1440), (60, 1344), (63, 1280), (64, 1260), (70, 1152), (72, 1120), (80, 1008), (84, 960), (90, 896), (96, 840), (105, 768), (112, 720), (120, 672), (126, 640), (128, 630), (140, 576), (144, 560), (160, 504), (168, 480), (180, 448), (192, 420), (210, 384), (224, 360), (240, 336), (252, 320), (256, 315), (280, 288)]