516721640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{3181}}^1$

素因数の和:3354

約数の個数: 64

約数和(自身を含む): 1209669120

約数和(自身を除く): 692947480

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 131, 155, 248, 262, 310, 524, 620, 655, 1048, 1240, 1310, 2620, 3181, 4061, 5240, 6362, 8122, 12724, 15905, 16244, 20305, 25448, 31810, 32488, 40610, 63620, 81220, 98611, 127240, 162440, 197222, 394444, 416711, 493055, 788888, 833422, 986110, 1666844, 1972220, 2083555, 3333688, 3944440, 4167110, 8334220, 12918041, 16668440, 25836082, 51672164, 64590205, 103344328, 129180410, 258360820, 516721640]

約数ペア:

[(1, 516721640), (2, 258360820), (4, 129180410), (5, 103344328), (8, 64590205), (10, 51672164), (20, 25836082), (31, 16668440), (40, 12918041), (62, 8334220), (124, 4167110), (131, 3944440), (155, 3333688), (248, 2083555), (262, 1972220), (310, 1666844), (524, 986110), (620, 833422), (655, 788888), (1048, 493055), (1240, 416711), (1310, 394444), (2620, 197222), (3181, 162440), (4061, 127240), (5240, 98611), (6362, 81220), (8122, 63620), (12724, 40610), (15905, 32488), (16244, 31810), (20305, 25448)]