20418480

素因数分解:

$2^4\times 3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1$

素因数の和:185

約数の個数: 200

約数和(自身を含む): 74539872

約数和(自身を除く): 54121392

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 27, 30, 36, 40, 45, 46, 48, 54, 60, 69, 72, 80, 81, 90, 92, 108, 115, 120, 135, 137, 138, 144, 162, 180, 184, 207, 216, 230, 240, 270, 274, 276, 324, 345, 360, 368, 405, 411, 414, 432, 460, 540, 548, 552, 621, 648, 685, 690, 720, 810, 822, 828, 920, 1035, 1080, 1096, 1104, 1233, 1242, 1296, 1370, 1380, 1620, 1644, 1656, 1840, 1863, 2055, 2070, 2160, 2192, 2466, 2484, 2740, 2760, 3105, 3151, 3240, 3288, 3312, 3699, 3726, 4110, 4140, 4932, 4968, 5480, 5520, 6165, 6210, 6302, 6480, 6576, 7398, 7452, 8220, 8280, 9315, 9453, 9864, 9936, 10960, 11097, 12330, 12420, 12604, 14796, 14904, 15755, 16440, 16560, 18495, 18630, 18906, 19728, 22194, 24660, 24840, 25208, 28359, 29592, 29808, 31510, 32880, 36990, 37260, 37812, 44388, 47265, 49320, 49680, 50416, 55485, 56718, 59184, 63020, 73980, 74520, 75624, 85077, 88776, 94530, 98640, 110970, 113436, 126040, 141795, 147960, 149040, 151248, 170154, 177552, 189060, 221940, 226872, 252080, 255231, 283590, 295920, 340308, 378120, 425385, 443880, 453744, 510462, 567180, 680616, 756240, 850770, 887760, 1020924, 1134360, 1276155, 1361232, 1701540, 2041848, 2268720, 2552310, 3403080, 4083696, 5104620, 6806160, 10209240, 20418480]

約数ペア:

[(1, 20418480), (2, 10209240), (3, 6806160), (4, 5104620), (5, 4083696), (6, 3403080), (8, 2552310), (9, 2268720), (10, 2041848), (12, 1701540), (15, 1361232), (16, 1276155), (18, 1134360), (20, 1020924), (23, 887760), (24, 850770), (27, 756240), (30, 680616), (36, 567180), (40, 510462), (45, 453744), (46, 443880), (48, 425385), (54, 378120), (60, 340308), (69, 295920), (72, 283590), (80, 255231), (81, 252080), (90, 226872), (92, 221940), (108, 189060), (115, 177552), (120, 170154), (135, 151248), (137, 149040), (138, 147960), (144, 141795), (162, 126040), (180, 113436), (184, 110970), (207, 98640), (216, 94530), (230, 88776), (240, 85077), (270, 75624), (274, 74520), (276, 73980), (324, 63020), (345, 59184), (360, 56718), (368, 55485), (405, 50416), (411, 49680), (414, 49320), (432, 47265), (460, 44388), (540, 37812), (548, 37260), (552, 36990), (621, 32880), (648, 31510), (685, 29808), (690, 29592), (720, 28359), (810, 25208), (822, 24840), (828, 24660), (920, 22194), (1035, 19728), (1080, 18906), (1096, 18630), (1104, 18495), (1233, 16560), (1242, 16440), (1296, 15755), (1370, 14904), (1380, 14796), (1620, 12604), (1644, 12420), (1656, 12330), (1840, 11097), (1863, 10960), (2055, 9936), (2070, 9864), (2160, 9453), (2192, 9315), (2466, 8280), (2484, 8220), (2740, 7452), (2760, 7398), (3105, 6576), (3151, 6480), (3240, 6302), (3288, 6210), (3312, 6165), (3699, 5520), (3726, 5480), (4110, 4968), (4140, 4932)]