198521680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4993}}^1$

素因数の和:5084

約数の個数: 80

約数和(自身を含む): 535037184

約数和(自身を除く): 336515504

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 71, 80, 112, 140, 142, 280, 284, 355, 497, 560, 568, 710, 994, 1136, 1420, 1988, 2485, 2840, 3976, 4970, 4993, 5680, 7952, 9940, 9986, 19880, 19972, 24965, 34951, 39760, 39944, 49930, 69902, 79888, 99860, 139804, 174755, 199720, 279608, 349510, 354503, 399440, 559216, 699020, 709006, 1398040, 1418012, 1772515, 2481521, 2796080, 2836024, 3545030, 4963042, 5672048, 7090060, 9926084, 12407605, 14180120, 19852168, 24815210, 28360240, 39704336, 49630420, 99260840, 198521680]

約数ペア:

[(1, 198521680), (2, 99260840), (4, 49630420), (5, 39704336), (7, 28360240), (8, 24815210), (10, 19852168), (14, 14180120), (16, 12407605), (20, 9926084), (28, 7090060), (35, 5672048), (40, 4963042), (56, 3545030), (70, 2836024), (71, 2796080), (80, 2481521), (112, 1772515), (140, 1418012), (142, 1398040), (280, 709006), (284, 699020), (355, 559216), (497, 399440), (560, 354503), (568, 349510), (710, 279608), (994, 199720), (1136, 174755), (1420, 139804), (1988, 99860), (2485, 79888), (2840, 69902), (3976, 49930), (4970, 39944), (4993, 39760), (5680, 34951), (7952, 24965), (9940, 19972), (9986, 19880)]