21650720

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1487}}^1$

素因数の和:1522

約数の個数: 96

約数和(自身を含む): 62995968

約数和(自身を除く): 41345248

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 160, 182, 208, 224, 260, 280, 364, 416, 455, 520, 560, 728, 910, 1040, 1120, 1456, 1487, 1820, 2080, 2912, 2974, 3640, 5948, 7280, 7435, 10409, 11896, 14560, 14870, 19331, 20818, 23792, 29740, 38662, 41636, 47584, 52045, 59480, 77324, 83272, 96655, 104090, 118960, 135317, 154648, 166544, 193310, 208180, 237920, 270634, 309296, 333088, 386620, 416360, 541268, 618592, 676585, 773240, 832720, 1082536, 1353170, 1546480, 1665440, 2165072, 2706340, 3092960, 4330144, 5412680, 10825360, 21650720]

約数ペア:

[(1, 21650720), (2, 10825360), (4, 5412680), (5, 4330144), (7, 3092960), (8, 2706340), (10, 2165072), (13, 1665440), (14, 1546480), (16, 1353170), (20, 1082536), (26, 832720), (28, 773240), (32, 676585), (35, 618592), (40, 541268), (52, 416360), (56, 386620), (65, 333088), (70, 309296), (80, 270634), (91, 237920), (104, 208180), (112, 193310), (130, 166544), (140, 154648), (160, 135317), (182, 118960), (208, 104090), (224, 96655), (260, 83272), (280, 77324), (364, 59480), (416, 52045), (455, 47584), (520, 41636), (560, 38662), (728, 29740), (910, 23792), (1040, 20818), (1120, 19331), (1456, 14870), (1487, 14560), (1820, 11896), (2080, 10409), (2912, 7435), (2974, 7280), (3640, 5948)]