71996120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{389}}^1\times {\mathrm{661}}^1$

素因数の和:1068

約数の個数: 64

約数和(自身を含む): 185889600

約数和(自身を除く): 113893480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 389, 661, 778, 1322, 1556, 1945, 2644, 2723, 3112, 3305, 3890, 4627, 5288, 5446, 6610, 7780, 9254, 10892, 13220, 13615, 15560, 18508, 21784, 23135, 26440, 27230, 37016, 46270, 54460, 92540, 108920, 185080, 257129, 514258, 1028516, 1285645, 1799903, 2057032, 2571290, 3599806, 5142580, 7199612, 8999515, 10285160, 14399224, 17999030, 35998060, 71996120]

約数ペア:

[(1, 71996120), (2, 35998060), (4, 17999030), (5, 14399224), (7, 10285160), (8, 8999515), (10, 7199612), (14, 5142580), (20, 3599806), (28, 2571290), (35, 2057032), (40, 1799903), (56, 1285645), (70, 1028516), (140, 514258), (280, 257129), (389, 185080), (661, 108920), (778, 92540), (1322, 54460), (1556, 46270), (1945, 37016), (2644, 27230), (2723, 26440), (3112, 23135), (3305, 21784), (3890, 18508), (4627, 15560), (5288, 13615), (5446, 13220), (6610, 10892), (7780, 9254)]