80671400

素因数分解:

$2^3\times 5^2\times {\mathrm{251}}^1\times {\mathrm{1607}}^1$

素因数の和:1874

約数の個数: 48

約数和(自身を含む): 188425440

約数和(自身を除く): 107754040

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 251, 502, 1004, 1255, 1607, 2008, 2510, 3214, 5020, 6275, 6428, 8035, 10040, 12550, 12856, 16070, 25100, 32140, 40175, 50200, 64280, 80350, 160700, 321400, 403357, 806714, 1613428, 2016785, 3226856, 4033570, 8067140, 10083925, 16134280, 20167850, 40335700, 80671400]

約数ペア:

[(1, 80671400), (2, 40335700), (4, 20167850), (5, 16134280), (8, 10083925), (10, 8067140), (20, 4033570), (25, 3226856), (40, 2016785), (50, 1613428), (100, 806714), (200, 403357), (251, 321400), (502, 160700), (1004, 80350), (1255, 64280), (1607, 50200), (2008, 40175), (2510, 32140), (3214, 25100), (5020, 16070), (6275, 12856), (6428, 12550), (8035, 10040)]