20993940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{461}}^1$

素因数の和:510

約数の個数: 144

約数和(自身を含む): 72648576

約数和(自身を除く): 51654636

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 23, 30, 33, 36, 44, 45, 46, 55, 60, 66, 69, 90, 92, 99, 110, 115, 132, 138, 165, 180, 198, 207, 220, 230, 253, 276, 330, 345, 396, 414, 460, 461, 495, 506, 660, 690, 759, 828, 922, 990, 1012, 1035, 1265, 1380, 1383, 1518, 1844, 1980, 2070, 2277, 2305, 2530, 2766, 3036, 3795, 4140, 4149, 4554, 4610, 5060, 5071, 5532, 6915, 7590, 8298, 9108, 9220, 10142, 10603, 11385, 13830, 15180, 15213, 16596, 20284, 20745, 21206, 22770, 25355, 27660, 30426, 31809, 41490, 42412, 45540, 45639, 50710, 53015, 60852, 63618, 76065, 82980, 91278, 95427, 101420, 106030, 116633, 127236, 152130, 159045, 182556, 190854, 212060, 228195, 233266, 304260, 318090, 349899, 381708, 456390, 466532, 477135, 583165, 636180, 699798, 912780, 954270, 1049697, 1166330, 1399596, 1749495, 1908540, 2099394, 2332660, 3498990, 4198788, 5248485, 6997980, 10496970, 20993940]

約数ペア:

[(1, 20993940), (2, 10496970), (3, 6997980), (4, 5248485), (5, 4198788), (6, 3498990), (9, 2332660), (10, 2099394), (11, 1908540), (12, 1749495), (15, 1399596), (18, 1166330), (20, 1049697), (22, 954270), (23, 912780), (30, 699798), (33, 636180), (36, 583165), (44, 477135), (45, 466532), (46, 456390), (55, 381708), (60, 349899), (66, 318090), (69, 304260), (90, 233266), (92, 228195), (99, 212060), (110, 190854), (115, 182556), (132, 159045), (138, 152130), (165, 127236), (180, 116633), (198, 106030), (207, 101420), (220, 95427), (230, 91278), (253, 82980), (276, 76065), (330, 63618), (345, 60852), (396, 53015), (414, 50710), (460, 45639), (461, 45540), (495, 42412), (506, 41490), (660, 31809), (690, 30426), (759, 27660), (828, 25355), (922, 22770), (990, 21206), (1012, 20745), (1035, 20284), (1265, 16596), (1380, 15213), (1383, 15180), (1518, 13830), (1844, 11385), (1980, 10603), (2070, 10142), (2277, 9220), (2305, 9108), (2530, 8298), (2766, 7590), (3036, 6915), (3795, 5532), (4140, 5071), (4149, 5060), (4554, 4610)]