888977840

素因数分解:

$2^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1\times {\mathrm{1051}}^1$

素因数の和:1270

約数の個数: 80

約数和(自身を含む): 2109344160

約数和(自身を除く): 1220366320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 97, 109, 194, 218, 388, 436, 485, 545, 776, 872, 970, 1051, 1090, 1552, 1744, 1940, 2102, 2180, 3880, 4204, 4360, 5255, 7760, 8408, 8720, 10510, 10573, 16816, 21020, 21146, 42040, 42292, 52865, 84080, 84584, 101947, 105730, 114559, 169168, 203894, 211460, 229118, 407788, 422920, 458236, 509735, 572795, 815576, 845840, 916472, 1019470, 1145590, 1631152, 1832944, 2038940, 2291180, 4077880, 4582360, 8155760, 9164720, 11112223, 22224446, 44448892, 55561115, 88897784, 111122230, 177795568, 222244460, 444488920, 888977840]

約数ペア:

[(1, 888977840), (2, 444488920), (4, 222244460), (5, 177795568), (8, 111122230), (10, 88897784), (16, 55561115), (20, 44448892), (40, 22224446), (80, 11112223), (97, 9164720), (109, 8155760), (194, 4582360), (218, 4077880), (388, 2291180), (436, 2038940), (485, 1832944), (545, 1631152), (776, 1145590), (872, 1019470), (970, 916472), (1051, 845840), (1090, 815576), (1552, 572795), (1744, 509735), (1940, 458236), (2102, 422920), (2180, 407788), (3880, 229118), (4204, 211460), (4360, 203894), (5255, 169168), (7760, 114559), (8408, 105730), (8720, 101947), (10510, 84584), (10573, 84080), (16816, 52865), (21020, 42292), (21146, 42040)]