81297440

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{2503}}^1$

素因数の和:2554

約数の個数: 96

約数和(自身を含む): 227162880

約数和(自身を除く): 145865440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 32, 35, 40, 56, 58, 70, 80, 112, 116, 140, 145, 160, 203, 224, 232, 280, 290, 406, 464, 560, 580, 812, 928, 1015, 1120, 1160, 1624, 2030, 2320, 2503, 3248, 4060, 4640, 5006, 6496, 8120, 10012, 12515, 16240, 17521, 20024, 25030, 32480, 35042, 40048, 50060, 70084, 72587, 80096, 87605, 100120, 140168, 145174, 175210, 200240, 280336, 290348, 350420, 362935, 400480, 508109, 560672, 580696, 700840, 725870, 1016218, 1161392, 1401680, 1451740, 2032436, 2322784, 2540545, 2803360, 2903480, 4064872, 5081090, 5806960, 8129744, 10162180, 11613920, 16259488, 20324360, 40648720, 81297440]

約数ペア:

[(1, 81297440), (2, 40648720), (4, 20324360), (5, 16259488), (7, 11613920), (8, 10162180), (10, 8129744), (14, 5806960), (16, 5081090), (20, 4064872), (28, 2903480), (29, 2803360), (32, 2540545), (35, 2322784), (40, 2032436), (56, 1451740), (58, 1401680), (70, 1161392), (80, 1016218), (112, 725870), (116, 700840), (140, 580696), (145, 560672), (160, 508109), (203, 400480), (224, 362935), (232, 350420), (280, 290348), (290, 280336), (406, 200240), (464, 175210), (560, 145174), (580, 140168), (812, 100120), (928, 87605), (1015, 80096), (1120, 72587), (1160, 70084), (1624, 50060), (2030, 40048), (2320, 35042), (2503, 32480), (3248, 25030), (4060, 20024), (4640, 17521), (5006, 16240), (6496, 12515), (8120, 10012)]