81514760

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{251}}^1\times {\mathrm{353}}^1$

素因数の和:638

約数の個数: 64

約数和(自身を含む): 192689280

約数和(自身を除く): 111174520

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 251, 353, 460, 502, 706, 920, 1004, 1255, 1412, 1765, 2008, 2510, 2824, 3530, 5020, 5773, 7060, 8119, 10040, 11546, 14120, 16238, 23092, 28865, 32476, 40595, 46184, 57730, 64952, 81190, 88603, 115460, 162380, 177206, 230920, 324760, 354412, 443015, 708824, 886030, 1772060, 2037869, 3544120, 4075738, 8151476, 10189345, 16302952, 20378690, 40757380, 81514760]

約数ペア:

[(1, 81514760), (2, 40757380), (4, 20378690), (5, 16302952), (8, 10189345), (10, 8151476), (20, 4075738), (23, 3544120), (40, 2037869), (46, 1772060), (92, 886030), (115, 708824), (184, 443015), (230, 354412), (251, 324760), (353, 230920), (460, 177206), (502, 162380), (706, 115460), (920, 88603), (1004, 81190), (1255, 64952), (1412, 57730), (1765, 46184), (2008, 40595), (2510, 32476), (2824, 28865), (3530, 23092), (5020, 16238), (5773, 14120), (7060, 11546), (8119, 10040)]