40320

素因数分解:

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

素因数の和:32

約数の個数: 96

約数和(自身を含む): 159120

約数和(自身を除く): 118800

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, 280, 288, 315, 320, 336, 360, 384, 420, 448, 480, 504, 560, 576, 630, 640, 672, 720, 840, 896, 960, 1008, 1120, 1152, 1260, 1344, 1440, 1680, 1920, 2016, 2240, 2520, 2688, 2880, 3360, 4032, 4480, 5040, 5760, 6720, 8064, 10080, 13440, 20160, 40320]

約数ペア:

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