21018180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{179}}^1$

素因数の和:313

約数の個数: 96

約数和(自身を含む): 62899200

約数和(自身を除く): 41881020

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 103, 114, 179, 190, 206, 228, 285, 309, 358, 380, 412, 515, 537, 570, 618, 716, 895, 1030, 1074, 1140, 1236, 1545, 1790, 1957, 2060, 2148, 2685, 3090, 3401, 3580, 3914, 5370, 5871, 6180, 6802, 7828, 9785, 10203, 10740, 11742, 13604, 17005, 18437, 19570, 20406, 23484, 29355, 34010, 36874, 39140, 40812, 51015, 55311, 58710, 68020, 73748, 92185, 102030, 110622, 117420, 184370, 204060, 221244, 276555, 350303, 368740, 553110, 700606, 1050909, 1106220, 1401212, 1751515, 2101818, 3503030, 4203636, 5254545, 7006060, 10509090, 21018180]

約数ペア:

[(1, 21018180), (2, 10509090), (3, 7006060), (4, 5254545), (5, 4203636), (6, 3503030), (10, 2101818), (12, 1751515), (15, 1401212), (19, 1106220), (20, 1050909), (30, 700606), (38, 553110), (57, 368740), (60, 350303), (76, 276555), (95, 221244), (103, 204060), (114, 184370), (179, 117420), (190, 110622), (206, 102030), (228, 92185), (285, 73748), (309, 68020), (358, 58710), (380, 55311), (412, 51015), (515, 40812), (537, 39140), (570, 36874), (618, 34010), (716, 29355), (895, 23484), (1030, 20406), (1074, 19570), (1140, 18437), (1236, 17005), (1545, 13604), (1790, 11742), (1957, 10740), (2060, 10203), (2148, 9785), (2685, 7828), (3090, 6802), (3401, 6180), (3580, 5871), (3914, 5370)]