408240

素因数分解:

$2^4\times 3^6\times 5^1\times 7^1$

素因数の和:38

約数の個数: 140

約数和(自身を含む): 1626384

約数和(自身を除く): 1218144

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 81, 84, 90, 105, 108, 112, 120, 126, 135, 140, 144, 162, 168, 180, 189, 210, 216, 240, 243, 252, 270, 280, 315, 324, 336, 360, 378, 405, 420, 432, 486, 504, 540, 560, 567, 630, 648, 720, 729, 756, 810, 840, 945, 972, 1008, 1080, 1134, 1215, 1260, 1296, 1458, 1512, 1620, 1680, 1701, 1890, 1944, 2160, 2268, 2430, 2520, 2835, 2916, 3024, 3240, 3402, 3645, 3780, 3888, 4536, 4860, 5040, 5103, 5670, 5832, 6480, 6804, 7290, 7560, 8505, 9072, 9720, 10206, 11340, 11664, 13608, 14580, 15120, 17010, 19440, 20412, 22680, 25515, 27216, 29160, 34020, 40824, 45360, 51030, 58320, 68040, 81648, 102060, 136080, 204120, 408240]

約数ペア:

[(1, 408240), (2, 204120), (3, 136080), (4, 102060), (5, 81648), (6, 68040), (7, 58320), (8, 51030), (9, 45360), (10, 40824), (12, 34020), (14, 29160), (15, 27216), (16, 25515), (18, 22680), (20, 20412), (21, 19440), (24, 17010), (27, 15120), (28, 14580), (30, 13608), (35, 11664), (36, 11340), (40, 10206), (42, 9720), (45, 9072), (48, 8505), (54, 7560), (56, 7290), (60, 6804), (63, 6480), (70, 5832), (72, 5670), (80, 5103), (81, 5040), (84, 4860), (90, 4536), (105, 3888), (108, 3780), (112, 3645), (120, 3402), (126, 3240), (135, 3024), (140, 2916), (144, 2835), (162, 2520), (168, 2430), (180, 2268), (189, 2160), (210, 1944), (216, 1890), (240, 1701), (243, 1680), (252, 1620), (270, 1512), (280, 1458), (315, 1296), (324, 1260), (336, 1215), (360, 1134), (378, 1080), (405, 1008), (420, 972), (432, 945), (486, 840), (504, 810), (540, 756), (560, 729), (567, 720), (630, 648)]