15679980400

素因数分解:

$2^4\times 5^2\times 7^2\times {\mathrm{799999}}^1$

素因数の和:800031

約数の個数: 90

約数和(自身を含む): 43821600000

約数和(自身を除く): 28141619600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 49, 50, 56, 70, 80, 98, 100, 112, 140, 175, 196, 200, 245, 280, 350, 392, 400, 490, 560, 700, 784, 980, 1225, 1400, 1960, 2450, 2800, 3920, 4900, 9800, 19600, 799999, 1599998, 3199996, 3999995, 5599993, 6399992, 7999990, 11199986, 12799984, 15999980, 19999975, 22399972, 27999965, 31999960, 39199951, 39999950, 44799944, 55999930, 63999920, 78399902, 79999900, 89599888, 111999860, 139999825, 156799804, 159999800, 195999755, 223999720, 279999650, 313599608, 319999600, 391999510, 447999440, 559999300, 627199216, 783999020, 979998775, 1119998600, 1567998040, 1959997550, 2239997200, 3135996080, 3919995100, 7839990200, 15679980400]

約数ペア:

[(1, 15679980400), (2, 7839990200), (4, 3919995100), (5, 3135996080), (7, 2239997200), (8, 1959997550), (10, 1567998040), (14, 1119998600), (16, 979998775), (20, 783999020), (25, 627199216), (28, 559999300), (35, 447999440), (40, 391999510), (49, 319999600), (50, 313599608), (56, 279999650), (70, 223999720), (80, 195999755), (98, 159999800), (100, 156799804), (112, 139999825), (140, 111999860), (175, 89599888), (196, 79999900), (200, 78399902), (245, 63999920), (280, 55999930), (350, 44799944), (392, 39999950), (400, 39199951), (490, 31999960), (560, 27999965), (700, 22399972), (784, 19999975), (980, 15999980), (1225, 12799984), (1400, 11199986), (1960, 7999990), (2450, 6399992), (2800, 5599993), (3920, 3999995), (4900, 3199996), (9800, 1599998), (19600, 799999)]