81721440

素因数分解:

$2^5\times 3^3\times 5^1\times {\mathrm{18917}}^1$

素因数の和:18941

約数の個数: 96

約数和(自身を含む): 286040160

約数和(自身を除く): 204318720

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, 90, 96, 108, 120, 135, 144, 160, 180, 216, 240, 270, 288, 360, 432, 480, 540, 720, 864, 1080, 1440, 2160, 4320, 18917, 37834, 56751, 75668, 94585, 113502, 151336, 170253, 189170, 227004, 283755, 302672, 340506, 378340, 454008, 510759, 567510, 605344, 681012, 756680, 851265, 908016, 1021518, 1135020, 1362024, 1513360, 1702530, 1816032, 2043036, 2270040, 2553795, 2724048, 3026720, 3405060, 4086072, 4540080, 5107590, 5448096, 6810120, 8172144, 9080160, 10215180, 13620240, 16344288, 20430360, 27240480, 40860720, 81721440]

約数ペア:

[(1, 81721440), (2, 40860720), (3, 27240480), (4, 20430360), (5, 16344288), (6, 13620240), (8, 10215180), (9, 9080160), (10, 8172144), (12, 6810120), (15, 5448096), (16, 5107590), (18, 4540080), (20, 4086072), (24, 3405060), (27, 3026720), (30, 2724048), (32, 2553795), (36, 2270040), (40, 2043036), (45, 1816032), (48, 1702530), (54, 1513360), (60, 1362024), (72, 1135020), (80, 1021518), (90, 908016), (96, 851265), (108, 756680), (120, 681012), (135, 605344), (144, 567510), (160, 510759), (180, 454008), (216, 378340), (240, 340506), (270, 302672), (288, 283755), (360, 227004), (432, 189170), (480, 170253), (540, 151336), (720, 113502), (864, 94585), (1080, 75668), (1440, 56751), (2160, 37834), (4320, 18917)]