20515680

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{1583}}^1$

素因数の和:1610

約数の個数: 120

約数和(自身を含む): 72448992

約数和(自身を除く): 51933312

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 72, 80, 81, 90, 96, 108, 120, 135, 144, 160, 162, 180, 216, 240, 270, 288, 324, 360, 405, 432, 480, 540, 648, 720, 810, 864, 1080, 1296, 1440, 1583, 1620, 2160, 2592, 3166, 3240, 4320, 4749, 6332, 6480, 7915, 9498, 12664, 12960, 14247, 15830, 18996, 23745, 25328, 28494, 31660, 37992, 42741, 47490, 50656, 56988, 63320, 71235, 75984, 85482, 94980, 113976, 126640, 128223, 142470, 151968, 170964, 189960, 213705, 227952, 253280, 256446, 284940, 341928, 379920, 427410, 455904, 512892, 569880, 641115, 683856, 759840, 854820, 1025784, 1139760, 1282230, 1367712, 1709640, 2051568, 2279520, 2564460, 3419280, 4103136, 5128920, 6838560, 10257840, 20515680]

約数ペア:

[(1, 20515680), (2, 10257840), (3, 6838560), (4, 5128920), (5, 4103136), (6, 3419280), (8, 2564460), (9, 2279520), (10, 2051568), (12, 1709640), (15, 1367712), (16, 1282230), (18, 1139760), (20, 1025784), (24, 854820), (27, 759840), (30, 683856), (32, 641115), (36, 569880), (40, 512892), (45, 455904), (48, 427410), (54, 379920), (60, 341928), (72, 284940), (80, 256446), (81, 253280), (90, 227952), (96, 213705), (108, 189960), (120, 170964), (135, 151968), (144, 142470), (160, 128223), (162, 126640), (180, 113976), (216, 94980), (240, 85482), (270, 75984), (288, 71235), (324, 63320), (360, 56988), (405, 50656), (432, 47490), (480, 42741), (540, 37992), (648, 31660), (720, 28494), (810, 25328), (864, 23745), (1080, 18996), (1296, 15830), (1440, 14247), (1583, 12960), (1620, 12664), (2160, 9498), (2592, 7915), (3166, 6480), (3240, 6332), (4320, 4749)]