81188480

素因数分解:

$2^7\times 5^1\times {\mathrm{126857}}^1$

素因数の和:126876

約数の個数: 32

約数和(自身を含む): 194092740

約数和(自身を除く): 112904260

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 126857, 253714, 507428, 634285, 1014856, 1268570, 2029712, 2537140, 4059424, 5074280, 8118848, 10148560, 16237696, 20297120, 40594240, 81188480]

約数ペア:

[(1, 81188480), (2, 40594240), (4, 20297120), (5, 16237696), (8, 10148560), (10, 8118848), (16, 5074280), (20, 4059424), (32, 2537140), (40, 2029712), (64, 1268570), (80, 1014856), (128, 634285), (160, 507428), (320, 253714), (640, 126857)]