20940810

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:164

約数の個数: 128

約数和(自身を含む): 59719680

約数和(自身を除く): 38778870

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 23, 30, 31, 33, 46, 55, 62, 66, 69, 89, 93, 110, 115, 138, 155, 165, 178, 186, 230, 253, 267, 310, 330, 341, 345, 445, 465, 506, 534, 682, 690, 713, 759, 890, 930, 979, 1023, 1265, 1335, 1426, 1518, 1705, 1958, 2046, 2047, 2139, 2530, 2670, 2759, 2937, 3410, 3565, 3795, 4094, 4278, 4895, 5115, 5518, 5874, 6141, 7130, 7590, 7843, 8277, 9790, 10230, 10235, 10695, 12282, 13795, 14685, 15686, 16554, 20470, 21390, 22517, 23529, 27590, 29370, 30349, 30705, 39215, 41385, 45034, 47058, 60698, 61410, 63457, 67551, 78430, 82770, 91047, 112585, 117645, 126914, 135102, 151745, 182094, 190371, 225170, 235290, 303490, 317285, 337755, 380742, 455235, 634570, 675510, 698027, 910470, 951855, 1396054, 1903710, 2094081, 3490135, 4188162, 6980270, 10470405, 20940810]

約数ペア:

[(1, 20940810), (2, 10470405), (3, 6980270), (5, 4188162), (6, 3490135), (10, 2094081), (11, 1903710), (15, 1396054), (22, 951855), (23, 910470), (30, 698027), (31, 675510), (33, 634570), (46, 455235), (55, 380742), (62, 337755), (66, 317285), (69, 303490), (89, 235290), (93, 225170), (110, 190371), (115, 182094), (138, 151745), (155, 135102), (165, 126914), (178, 117645), (186, 112585), (230, 91047), (253, 82770), (267, 78430), (310, 67551), (330, 63457), (341, 61410), (345, 60698), (445, 47058), (465, 45034), (506, 41385), (534, 39215), (682, 30705), (690, 30349), (713, 29370), (759, 27590), (890, 23529), (930, 22517), (979, 21390), (1023, 20470), (1265, 16554), (1335, 15686), (1426, 14685), (1518, 13795), (1705, 12282), (1958, 10695), (2046, 10235), (2047, 10230), (2139, 9790), (2530, 8277), (2670, 7843), (2759, 7590), (2937, 7130), (3410, 6141), (3565, 5874), (3795, 5518), (4094, 5115), (4278, 4895)]