19911960

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{179}}^1$

素因数の和:302

約数の個数: 128

約数和(自身を含む): 67392000

約数和(自身を除く): 47480040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 103, 108, 120, 135, 179, 180, 206, 216, 270, 309, 358, 360, 412, 515, 537, 540, 618, 716, 824, 895, 927, 1030, 1074, 1080, 1236, 1432, 1545, 1611, 1790, 1854, 2060, 2148, 2472, 2685, 2781, 3090, 3222, 3580, 3708, 4120, 4296, 4635, 4833, 5370, 5562, 6180, 6444, 7160, 7416, 8055, 9270, 9666, 10740, 11124, 12360, 12888, 13905, 16110, 18437, 18540, 19332, 21480, 22248, 24165, 27810, 32220, 36874, 37080, 38664, 48330, 55311, 55620, 64440, 73748, 92185, 96660, 110622, 111240, 147496, 165933, 184370, 193320, 221244, 276555, 331866, 368740, 442488, 497799, 553110, 663732, 737480, 829665, 995598, 1106220, 1327464, 1659330, 1991196, 2212440, 2488995, 3318660, 3982392, 4977990, 6637320, 9955980, 19911960]

約数ペア:

[(1, 19911960), (2, 9955980), (3, 6637320), (4, 4977990), (5, 3982392), (6, 3318660), (8, 2488995), (9, 2212440), (10, 1991196), (12, 1659330), (15, 1327464), (18, 1106220), (20, 995598), (24, 829665), (27, 737480), (30, 663732), (36, 553110), (40, 497799), (45, 442488), (54, 368740), (60, 331866), (72, 276555), (90, 221244), (103, 193320), (108, 184370), (120, 165933), (135, 147496), (179, 111240), (180, 110622), (206, 96660), (216, 92185), (270, 73748), (309, 64440), (358, 55620), (360, 55311), (412, 48330), (515, 38664), (537, 37080), (540, 36874), (618, 32220), (716, 27810), (824, 24165), (895, 22248), (927, 21480), (1030, 19332), (1074, 18540), (1080, 18437), (1236, 16110), (1432, 13905), (1545, 12888), (1611, 12360), (1790, 11124), (1854, 10740), (2060, 9666), (2148, 9270), (2472, 8055), (2685, 7416), (2781, 7160), (3090, 6444), (3222, 6180), (3580, 5562), (3708, 5370), (4120, 4833), (4296, 4635)]