201912720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{787}}^1\times {\mathrm{1069}}^1$

素因数の和:1872

約数の個数: 80

約数和(自身を含む): 627311040

約数和(自身を除く): 425398320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 787, 1069, 1574, 2138, 2361, 3148, 3207, 3935, 4276, 4722, 5345, 6296, 6414, 7870, 8552, 9444, 10690, 11805, 12592, 12828, 15740, 16035, 17104, 18888, 21380, 23610, 25656, 31480, 32070, 37776, 42760, 47220, 51312, 62960, 64140, 85520, 94440, 128280, 188880, 256560, 841303, 1682606, 2523909, 3365212, 4206515, 5047818, 6730424, 8413030, 10095636, 12619545, 13460848, 16826060, 20191272, 25239090, 33652120, 40382544, 50478180, 67304240, 100956360, 201912720]

約数ペア:

[(1, 201912720), (2, 100956360), (3, 67304240), (4, 50478180), (5, 40382544), (6, 33652120), (8, 25239090), (10, 20191272), (12, 16826060), (15, 13460848), (16, 12619545), (20, 10095636), (24, 8413030), (30, 6730424), (40, 5047818), (48, 4206515), (60, 3365212), (80, 2523909), (120, 1682606), (240, 841303), (787, 256560), (1069, 188880), (1574, 128280), (2138, 94440), (2361, 85520), (3148, 64140), (3207, 62960), (3935, 51312), (4276, 47220), (4722, 42760), (5345, 37776), (6296, 32070), (6414, 31480), (7870, 25656), (8552, 23610), (9444, 21380), (10690, 18888), (11805, 17104), (12592, 16035), (12828, 15740)]