40688240

素因数分解:

$2^4\times 5^1\times {\mathrm{257}}^1\times {\mathrm{1979}}^1$

素因数の和:2249

約数の個数: 40

約数和(自身を含む): 95016240

約数和(自身を除く): 54328000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 257, 514, 1028, 1285, 1979, 2056, 2570, 3958, 4112, 5140, 7916, 9895, 10280, 15832, 19790, 20560, 31664, 39580, 79160, 158320, 508603, 1017206, 2034412, 2543015, 4068824, 5086030, 8137648, 10172060, 20344120, 40688240]

約数ペア:

[(1, 40688240), (2, 20344120), (4, 10172060), (5, 8137648), (8, 5086030), (10, 4068824), (16, 2543015), (20, 2034412), (40, 1017206), (80, 508603), (257, 158320), (514, 79160), (1028, 39580), (1285, 31664), (1979, 20560), (2056, 19790), (2570, 15832), (3958, 10280), (4112, 9895), (5140, 7916)]