198785840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{397}}^1\times {\mathrm{569}}^1$

素因数の和:990

約数の個数: 80

約数和(自身を含む): 506351520

約数和(自身を除く): 307565680

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 397, 440, 569, 794, 880, 1138, 1588, 1985, 2276, 2845, 3176, 3970, 4367, 4552, 5690, 6259, 6352, 7940, 8734, 9104, 11380, 12518, 15880, 17468, 21835, 22760, 25036, 31295, 31760, 34936, 43670, 45520, 50072, 62590, 69872, 87340, 100144, 125180, 174680, 225893, 250360, 349360, 451786, 500720, 903572, 1129465, 1807144, 2258930, 2484823, 3614288, 4517860, 4969646, 9035720, 9939292, 12424115, 18071440, 19878584, 24848230, 39757168, 49696460, 99392920, 198785840]

約数ペア:

[(1, 198785840), (2, 99392920), (4, 49696460), (5, 39757168), (8, 24848230), (10, 19878584), (11, 18071440), (16, 12424115), (20, 9939292), (22, 9035720), (40, 4969646), (44, 4517860), (55, 3614288), (80, 2484823), (88, 2258930), (110, 1807144), (176, 1129465), (220, 903572), (397, 500720), (440, 451786), (569, 349360), (794, 250360), (880, 225893), (1138, 174680), (1588, 125180), (1985, 100144), (2276, 87340), (2845, 69872), (3176, 62590), (3970, 50072), (4367, 45520), (4552, 43670), (5690, 34936), (6259, 31760), (6352, 31295), (7940, 25036), (8734, 22760), (9104, 21835), (11380, 17468), (12518, 15880)]