71204420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{1979}}^1$

素因数の和:2252

約数の個数: 48

約数和(自身を含む): 171642240

約数和(自身を除く): 100437820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 257, 514, 1028, 1285, 1799, 1979, 2570, 3598, 3958, 5140, 7196, 7916, 8995, 9895, 13853, 17990, 19790, 27706, 35980, 39580, 55412, 69265, 138530, 277060, 508603, 1017206, 2034412, 2543015, 3560221, 5086030, 7120442, 10172060, 14240884, 17801105, 35602210, 71204420]

約数ペア:

[(1, 71204420), (2, 35602210), (4, 17801105), (5, 14240884), (7, 10172060), (10, 7120442), (14, 5086030), (20, 3560221), (28, 2543015), (35, 2034412), (70, 1017206), (140, 508603), (257, 277060), (514, 138530), (1028, 69265), (1285, 55412), (1799, 39580), (1979, 35980), (2570, 27706), (3598, 19790), (3958, 17990), (5140, 13853), (7196, 9895), (7916, 8995)]