80495720

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1\times {\mathrm{397}}^1$

素因数の和:582

約数の個数: 64

約数和(自身を含む): 187840080

約数和(自身を除く): 107344360

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 137, 148, 185, 274, 296, 370, 397, 548, 685, 740, 794, 1096, 1370, 1480, 1588, 1985, 2740, 3176, 3970, 5069, 5480, 7940, 10138, 14689, 15880, 20276, 25345, 29378, 40552, 50690, 54389, 58756, 73445, 101380, 108778, 117512, 146890, 202760, 217556, 271945, 293780, 435112, 543890, 587560, 1087780, 2012393, 2175560, 4024786, 8049572, 10061965, 16099144, 20123930, 40247860, 80495720]

約数ペア:

[(1, 80495720), (2, 40247860), (4, 20123930), (5, 16099144), (8, 10061965), (10, 8049572), (20, 4024786), (37, 2175560), (40, 2012393), (74, 1087780), (137, 587560), (148, 543890), (185, 435112), (274, 293780), (296, 271945), (370, 217556), (397, 202760), (548, 146890), (685, 117512), (740, 108778), (794, 101380), (1096, 73445), (1370, 58756), (1480, 54389), (1588, 50690), (1985, 40552), (2740, 29378), (3176, 25345), (3970, 20276), (5069, 15880), (5480, 14689), (7940, 10138)]